Tutorial: Update your iPhone 4 to iOS 4.2.1 without uploading the Baseband to be able to unlock it

With this tutorial you can update your iPhone 4 to iOS 4.2.1 without uploading the baseband, in order to later install Ultrasn0w and release it to be able to use it with any operator.

It only works on iPhone 4.

The latest releasable baseband for the iPhone 4 is the 01.59.00 so if you have another baseband you won't be able to release it even if you follow this tutorial.

YOU NEED:

Firmware 4.2.1

TinyUmbrella:

Windows

Mac

Greenpois0n RC5 v2

Windows

Mac

Attention XNUMX-hour: this process carries a risk, if you do not do it correctly you will not be able to use your iPhone 4 with any operator, do it with care and attention; and at your own risk.

TUTORIAL:

(screenshots are for Windows, but the process is exactly the same on Mac)

Connect your iPhone and run Umbrella.


Make sure your iOS 4.2.1 SHSH appear, if they don't appear press SAVE SHSH

press Start TSS Server and make sure that no type of error appears.

Once the TSS Server is working properly Umbrella will close iTunes.

Leave TinyUmbrella open.

If you get any error no continues o you will update la baseband with the consequent impossibility to release.

Open Itunes

Press the key Shift on your keyboard and at the same time the restore button in iTunes (Alt + Restore on Mac)

Select the firmware 4.2.1 that you have downloaded.

press restore.
Important: you will get an error 1013. That's good, that's what we were looking for, this means that the baseband has not been updated.

Press OK and close iTunes.

If you get 16XX error put your iPhone in DFU and go back to iTunes and press SHIFT + Restore.
If you don't get the 1013 error, your baseband has been updated.

Now put your iPhone in DFU.

Run Greenpois0n and follow this tutorial
Your iPhone will now be in 4.2.1 with baseband 1.59.00

You just have to enter Cydia and install ultrasn0w to release it.

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  1.   ruben said

    If you have it with the latest jailbreak, can it be done? , excuse my ignorance, thank you

  2.   chick said

    Hello, with this news that the iphone 0 of vodafone and orange can be released x ultrasn4w?

  3.   alex said

    It is assumed that with this method it would always be valid, whatever version you want to upload the ios to, right? So I know 4.2.1 or 4.3 is going to come.

    ruben this is worth the same whether or not you have jailbreak

  4.   McYork said

    Hello. a question I have an iphone 3gs model MC131B firmware 4.0 and bb 06.15.00 this one, unlocked it has cydia and released with ultrasn0w and I would like to restore it or update it to 4.2.1 this iphone is from SWITZERLAND AND I DO NOT HAVE THE SIM to activate it. Please, if your GZLO OR SOMEONE CAN HELP ME WITH A 4.2.1 CUSTOM ACTIVATED FIRMWARE OR another option, I would be very grateful ... at good time for all the people who can already use their iphones ... the Web is very good ... I have followed it since I bought my first 3g ... THANK YOU
    AND THIS TUTE I HAVE DONE IT TO A 3G BEFORE BUT WITH THE 4.02 AND 4.1 AND IT WAS WONDERFUL, I ALSO MADE IT TO AN IPHONE 4 THAT WAS IN 4.02 TO 4.2 IT WAS PERFECT THE ONLY THING Q AFTER I UPDATED TYNI I WAS DEVICE UNKNOWN WHEN SAVING THE SHSH OF THAT IPHONE BUT YOU OTHERWISE IT ALL GREAT… now it's time to do it at 4.2.1. I did it with tyni 4.1.6

  5.   McYork said

    made on my iphone 4 goes 100 × 100 recommended

  6.   OSK said

    Hello,
    Thank you very much for this tutorial, I already sent you an email a few days ago to explain this process, but it must be that you are very busy or that you are not very interested in the contributions of the readers. In the end you have deduced it yourself, congratulations!
    The point is that this can be done for many weeks without problem, and then of course release it.
    Greetings.

  7.   chick said

    Please with this news that the iphone 0 of vodafone and orange can already be released x ultrasn4w?

  8.   McYork said

    Chicken if with this tutorial you can update to 4.2.1 without uploading your baseband and then from cydia install ultrasn0w, and use it with any operator ... remember that this process does not activate the iphone you must have the sim card with which it was activated for the first time that iphone ... follow all the steps described here read very well before doing it so that it works for you ... I did it with wnd 7 and I ran everything as administrator ... your iphone has to be with baseband 01.59.00 and this will remain one you see the whole process finished.

  9.   chick said

    Thank you very much for answering McYork, I said it because I intended to buy an iPhone 4 from vodafone and use it with another company (yoigo), what happens that until today they could not be released or that at least I understood, right? So with this I can already buy it quiet, right?

    Salu2

  10.   McYork said

    If you buy it new it will come with firmware 4.2.1 and baseband 03.10.01 and this baseband cannot be released with ultrasn0w you can only unlock iphone 4 with firmwre 4.0 / 4.0.2 / 4.1 / 4.2.1 that have baseband 01.59.00. XNUMX

  11.   chick said

    It is bought in a forum of those who take out of the points program, although they have taken it out a few weeks ago or a month, month and so I still have the same problem, right? It will come to me with a baseband higher than 1.59.00, sure, right?

    My joy in a well…

  12.   Iñigo said

    TO SEE IF YOU ENTERIS AT ONCE! This is only valid for those who have the baseband 01.59.00 on Iphone 4 (it cannot be done in the rest of the versions) and want to update to version 4.2.1 keeping said baseband. The mobiles that are bought now bring a larger baseband so it is not useful!

  13.   Leo said

    You have to have it jaibreao? ¿?

  14.   McYork said

    the clever Iñigo has already explained it to you

  15.   Abel said

    The other baseband, can it be done sometime between 03.10.01 and 02.10.04 ?????
    That is, are they looking for it ??? I say it to have any hope that one day we can be free ????

  16.   Pableras said

    Let's see if someone can give me a cable, I get to error 1013. I open the greenpoiso, but I am not able to get DFU mode no matter how hard I try. I constantly have the itunes connection indicator on the screen, I try to turn it off but it does not get like a loop.

    Gracias y saludos.

  17.   vine_g123 said

    That means that those who have iPhone 4 com bb03.10.01 cannot do the jail com rc5

  18.   vine_g123 said

    Help thanks

  19.   alvaro said

    Buenas tardes. In its day, I already updated to 4.1 using this same method and with the 1.59 baseband. I'm doing the same thing again but I get the following error: "The iPhone could not be restored because the iPhone software update server could not be contacted or the iPhone is temporarily unavailable."
    Does anyone know something and can help me out? I don't know what else I can do, in adding the following line to the host file in the / etc directory. but still not working 74.208.105.171 gs.apple.com
    It is not the first time that I carry out this method with the tinyumbrella and it is the first time that this error occurs.
    Thank you very much, I await your suggestions ...

  20.   Fran said

    A question, do you need the at & t chip to activate it?

  21.   adria said

    Does facetime work for you? because it doesn't connect me: S

  22.   leonardoh said

    If I'm on 02.10.04 and I don't need to use ultrasn0w to activate it, but I want to keep the bb 02.10.04 but being on 4.2.1, can I follow this same procedure?

  23.   I'll be back said

    Hello people, I wanted to ask you a question, I have an iPhone 3gs, with 4.0.1, and ultasn0w, I wanted to know if there is any way to update to 4.2.1 while keeping the baseband, in order to make this jailbreak and keep the phone free ...

  24.   cristian said

    alvaro: the same thing happened to me once, deactivate your antivirus or antispyware, because that is not allowing itunes to connect to the internet, let's see if that will solve it.
    regards

  25.   JJHH said

    It doesn't work for me going from 4.0.1 to 4.2.1, the symbol to connect to itunes remains and not even removing it from recovery mode with tinny, that is if after returning to 4.0.1 without problem.
    Does it happen to someone else?

  26.   alvaro said

    Thanks for the answer Cristian. I'm on Mac, I don't use antivirus or antispyware. In the end I managed to update it, but the clamp went out at the last moment and I updated the baseband to 3.10.
    In the last step to get it out of the recovery mode itunes gave me the error 1013.
    To avoid this error, you have to do the following:
    modify the / etc / hosts file
    leave the following line as shown below with the #
    # 74.208.10.249 gs.apple.com

    all the best

  27.   rads seven said

    First of all you have to know that regardless of the FW that our iPhone 4 has, be it 4.0, 4.1 or 4.2.1, the ONLY BaseBand that can be released by Ultras0wn is 01.59, so if we have a 02.10.04 or 03.10.01 .0 WE WILL NOT BE ABLE TO RELEASE IT FOR ANOTHER COMPANY OTHER THAN THE OFFICIAL, we will only be able to Jailbreak it (install third-party app and modify the iSO with Cydia) using GreenpoisXNUMXn.

    @Fran, yes, the SIM card is necessary to activate the iPhone, unless you get a Hacked FW.
    @McYork, you should look for a Custom FW on the internet for 4.2.1, I know there is because I have seen them out there, I have not downloaded them because at this moment what worries me is the Unlock for 02.10.04.
    @Tormo, of course you must look for a Custom FW on the internet for 4.2.1, I have already done it to several iPhone 3GS and it has worked wonderfully.
    @JJHH, the same thing happened to me, what you should do is:
    0.open Greenpois0n and follow the steps to put it in DFU mode
    1.When it is with the itunes logo, turn it off.
    2.Immediately press power button 3 sec.
    3.Now also press the Home button for 10 sec.
    4.Now release the power button and hold the Home button until Greenpois0n recognizes the iPhone in DFU mode.
    5.after I jailbreak, it remains in the famous "emergency call", what I did was put the AT&T SIM to activate it with iTunes.
    6.When I enter the Springboard, I already had the Loader icon to install Cydia

    Greetings from Costa Rica, and waiting for the Unlock for BB 02.10.04 🙁

  28.   rads seven said

    First of all you have to know that regardless of the FW that our iPhone 4 has, be it 4.0, 4.1 or 4.2.1, the ONLY BaseBand that can be released by Ultrasn0w is 01.59, so if we have a 02.10.04 or 03.10.01 .0 WE WILL NOT BE ABLE TO RELEASE IT FOR ANOTHER COMPANY OTHER THAN THE OFFICIAL, we will only be able to Jailbreak it (install third-party app and modify the iOS with Cydia) using GreenpoisXNUMXn.

    @Fran, yes, the SIM card is necessary to activate the iPhone, unless you get a Hacked FW.
    @McYork, you should look for a Custom FW on the internet for 4.2.1, I know there is because I have seen them out there, I have not downloaded them because at this moment what worries me is the Unlock for 02.10.04.
    @Tormo, of course you must look for a Custom FW on the internet for 4.2.1, I have already done it to several iPhone 3GS and it has worked wonderfully.
    @JJHH, the same thing happened to me, what you should do is:
    0.open Greenpois0n and follow the steps to put it in DFU mode
    1.When it is with the itunes logo, turn it off.
    2.Immediately press power button 3 sec.
    3.Now also press the Home button for 10 sec.
    4.Now release the power button and hold the Home button until Greenpois0n recognizes the iPhone in DFU mode.
    5.After the jailbreak is done, it remains in the famous "emergency call", what I did was put the AT&T SIM to activate it with iTunes.
    6.When he entered the Springboard, he already had the Loader icon to install Cydia

    Greetings from Costa Rica, and waiting for the Unlock for BB 02.10.04 🙁

  29.   jose.vet said

    2 things:
    -1st: Damn how desperate to see the ridiculous questions of people who show that they have not read absolutely anything and now they want to do a process that requires some experience and knowledge of the iPhone.
    -2ª: It is very rare that there is no method to update a 3GS (like mine) to 4.2.1 without uploading baseband. Has anyone succeeded?
    Oh by the way, nobody has clarified anything about the activation either.
    Thank you.

  30.   jose.vet said

    Bravo RADSIETE !! Someone who speaks clearly and leaves all the points answered.
    I'm going to find a custom FW 4.2.1 for my iphone and try to put it in without uploading the baseband.
    Does anyone know where there is a tutor? How strange that there are none currently iPhone ...
    Thanks radsiete !!

  31.   Minerva said

    Hello mcyork, thank you very much for your tutelage, my question is that it does not activate it, I have the microsim with which they bought it (I bought it second hand) but it is not active, that is, the old user already has one Normal sim with the same number and I deactivate this because he no longer needed it and he gave it to me. Ok tb to activate the iphone? is that I if I have 01.59 and I am in 4.1 to be able to update to 4.2.1 because I have many network errors in this firmware. Thanks!

  32.   Minerva said

    Well, I ask everyone about the microsim, not just mcyork, who can clarify it for me ... is it necessary that it be an active microsim? Thank you!

  33.   jose.vet said

    I am not able to find a custom firmware 4.2.1 activated for iphone 3GS
    Can somebody help me? Then how do I put it without going up baby? with redsnow I guess, right?
    Thank you

  34.   McYork said

    minerva you have to be 100 x100 sure that that microsim is the one that activated that iphone when it was bought, it is more only the microsim / or sim of the same operator will activate it, only that the big sim you will have to cut it and make it the same size of the microsim to fit the iphone 4 ... I tell you to be completely sure because if you do this tutorial or any other and it is not the sim you will not be able to activate the idevice ... luck

  35.   McYork said

    AND ONE THING ... THIS TUTORIAL IS THANKS TO THE STAF FROM "IPHONE ACTUALITY" I ONLY PUT MY LITTLE EXPERIENCES !!!! THANK YOU

  36.   McYork said

    radsiete .. COULD YOU GIVE ME THE LINK OF THE FIRMWARE OF THE IPHONE 3GS 4.2.1 ACTIVATED I DO NOT TRUST ANOTHER THANKS
    YOU HAVE TO GO TO THE DARK SIDE OF MAC ... HAHAHAHAHAHA

  37.   rads seven said

    @ jose.vet, here is the tutorial link with all the well explained steps on how to install a Custom FW 4.2.1 to an iPhone 3GS. The only problem is that you must have the original SIM from the operator. If you don't have it, it would be good if you get it or buy it on eBay, for example.

    http://xsellize.com/topic/98192-how-to-upgrade-iphone-3gs-421-using-custom-firmwareguide/

    I NEVER recommend the hacktivados FW, since they present many problems, performance, Push notification failures, more battery consumption, YouTube does not work, etc ...
    As I said before, it is better to buy a SIM from the Original operator, online on eBay, so you will end these annoyances and you can restore whenever you want because you have the Original SIM. ** Note: It does NOT matter that the SIM is not active, it works the same way. **
    @minerva, it does not matter that the SIM or microSIM is not active, what you must be sure is that it is really from the operator for which that iPhone is blocked.

  38.   leonardoh said

    @radsiete you are waiting for the bb 02.10.04 iwal what me? But do you know if you can update with this procedure that they say to iOS 4.2.1 without uploading the bb of 02.10.04?

  39.   rads seven said

    @Leonardoh, if I'm waiting for the unlock for 02.10.04.
    What I did was download the last TinyUmbrella 4.21.07 and do the same steps that Gnzl put here, follow them to the letter and it will not give you an error. Clarification: if you get an error in TinyUmbrella, do not continue, it will upload the BB to the iPhone.
    The only error it has to give is 1013 when iTunes finishes installing iOS 4.2.1.
    Then follow the steps that I do, the ones in my previous post and you will have an iPhone 4 with iOS 4.2.1 and BB 02.10.04

  40.   McYork said

    seven ... I need a firmware activated for a 3gs model MC131B firmware 4.0 and bb 06.15.00 I BUY THIS IPHONE SO AND I don't know which operator is the sim to activate it is currently working well with 4.0 but I want to have 4.2.1 and I can only restore with custom firmwares..because it has the ipad bb

  41.   rads seven said

    @ jose.vet / @McYork
    Once they have gotten the SIM for activation:
    1. If the iPhone 3GS is old bootrom, you can Jailbreak with Redsn0w and it will be Untethered !!! 😀
    2. If the iPhone 3GS is new bootrom they should do it with the new Greenpois0n (Untethered) otherwise with Redsn0w they would be Tethered.
    3. If you get some kind of error for being 3GS new bootrom, then Jailbreak with Redsn0w and then run the Greenpois0n tool so that it becomes Untethered.
    Luck!!!!!!!!!!!
    Greetings from Costa Rica, and waiting for the Unlock for BB 02.10.04 🙁

  42.   McYork said

    Thanks radsiete !!! BUT IF SOMEONE CAN GIVE ME THE CUSTOM 4.2.1 ACTIVATED FIRMWARE THE BEST IS FOR A 3GS..GOOD NIGHT FROM ACA SPAIN… THANK YOU ALL AND LUCK BE WITH US…

  43.   rads seven said

    @McYork
    There is nothing that Google cannot find, if you are completely sure that the 3GS model you gave me is correct, here is the SIM operator you should get:

    Country: UK
    Carrier: O2

    MB489B / A
    MB496B / A
    MB500B / A
    MC131B / A (this is your iPhone)
    MC132B / A
    MC133B / A
    MC134B / A

  44.   rahulk said

    I have a 4 gb iphone 32 with firmware 4.2.1 and _baseband 03.10.01_ I wanted to ask you if it is advisable to do the unthetered jailbreak that just came out ... or first I do this process that indicates here my other problem is the baseband I think it is not in the range of those who can be released! HELP!!!! I already have a good time waiting for the jail to come out and to be able to release it but now I don't know if I will be able to release it once that I will do the jail ????
    When will the ultrasn0w come out, or do you recommend me ???
    regards
    THANK YOU

  45.   Louis duver said

    I have my iPhone 4 a month ago I bought it brought ios 4.0.2 bb 01.59.00 .. I would like to update it to ios 4.2.1 .. but I really don't dare. How safe would it be ... I already have the ssh saved in tyni umbrella ... download the 4.2.1 firmware and download the greenp0ison rc5 ,, I'm dying to update it .. But I'm afraid that something will go wrong and lose my phone, I think better I wait a little more ,, is to use my Apple tv ,, air play

  46.   Minerva said

    Aver, I think I have not explained myself clearly, I bought the unlocked iphone with ultrasn0w from a guy, and he gave me the microsim that had tb, but he has it deactivated because this boy asked for a duplicate to have the normal sim again to be able to use it with your normal mobiles, then the microsim that I have is the one that activated it but without being activated because the one that is activated with that phone number is the normal sim. My question is that, that even if it is deactivated if it is still valid to activate an iphone

  47.   Pablo said

    Hello, I have my iPhone 4 unlocked with the H2o Wireless company, I would like to know if jailbreaking the green poison would affect me in something with the unlocking. Help!!!!!!!! ??????????????? !!!!!!!!!!!

  48.   chelgarcia000@hotmail.com said

    the real greenposison are not one of my favorites to do the jailbreak, but well the real my respects and we must make donations so that these program developers continue to work, remember that if these types of developers are working it is because of the support that we give, donate colleagues although be a dollar and we will see that these people will always help us

  49.   oscarmh said

    Good morning everyone and thanks for this complete tutorial. Here is my question, to see if the oracles of the current iPhone can enlighten me, because I have been lost since I switched to the iPhone 4.

    I have an iphone 4 with jail on 4.1 and the baseband preserved at 01.59.00 I have always updated with custom firmwares and pwnagetool since I had the 3GS. There are reasons for you to continue being patient and wait for this same tool to come out, with which you can update preserving the baseband and release with ultrasn0w? If so, I prefer it.

    My wife has my 3GS, but she updated by mistake to the official 4.2.1 and the new baseband. Can I now proceed to release it in some way? You need the unlock.

    Thank you very much and greetings to all

  50.   jose.vet said

    @radsiete Thank you very much.
    I have my 3GS with new boot, with 4.2.1 and bb 5.13.04 jailbroken with greenpoison and released with ultrasn0w. 0 failures in all processes. I used redsnow to put a custom fw (4.2.1) in it without uploading the bb, then a card from the official operator (canceled a long time ago), so I could do JB with greenpoison, after that I installed ultrasn0w, I put my unofficial card and this activated the iphone. I synchronized and everything ok. The only fault is that aptbackup has not worked for me and I have had to put the cydia apps 'by hand'. No problem because I use about 5.
    Luck

  51.   McYork said

    Minerva!!! With the sin that gave you with the iphone you can activate it ... You do not need that it is active ... it internally carries the operator keys for the activation of the iphone I recommend that before restoring or updating remove the microsim ... Only insert it when it asks for activation from the iphone !!! Luck

  52.   Minerva said

    thanks mcyork that's what i needed to know so cool hehe cheers

  53.   endidj said

    Hi, thank you very much for the tutorial, everything ok !!!! But when entering the game center he sent me to create a new account (I have put the same nickname) but all my friends have been deleted, does anyone know how to fix it ????

  54.   Juan said

    Hi, I'm following the tutorial, but when I give Start TSS Server, the symbol that it is working remains, I wait for it to stop? or if it doesn't give an error, it doesn't give me any, do I open iTunes? in the log it tells me that this TSS is accepting connectons. Thanks in advance.

  55.   drjuanjo said

    I have the jailbreak with 4.0.2, if I make it the most current, will I lose the cracked apps that I have installed for testing?
    Thank you

  56.   I'll be back said

    Radsiete, thank you very much for your reply. I've been looking like crazy for the custom firmware, but I can't find it, I only find the one that has the iPad's bb, but they say it gives problems, in addition to losing the warranty. Can't do a 4.2.1 with bb 5.13 or something like that? If there is, could you send me a link and / or tutorial?
    I have iPhone 3gs 4.0.1 bb 05.13.04 with ultasnow installed, I am looking to update to 4.2.1 with same baseband

  57.   BigBoy said

    Hello. This is my first iPhone and I don't have much knowledge. So far I use it with any operator and it works perfectly.

    iOS: 4.2.1
    Baseband: 03:10:01
    Operator: Movistar 9.0
    No jailbreak.

    I guess he's freed or something. I have not the slightest idea but it works with my Movistar Venezuela and with other sims from other operators that I have put into it. I bought it in Madrid when I arrived in Venezuela. I cut my sim, I put it back, and it was activated. And I have done the same with other sims from other operators.

    Someone tell me what kind of unlock I have and if I jailbreak it and if I will run any risk?

  58.   Elp @ ci said

    I have done everything indicated here, but it turns out that the sim is not activated and that I have the original, but it does not start. Someone who can tell me something, I have iphone 4 with 4.2.1 and bb 01.59. If I don't release it, it's okay, but let me continue using the telephone operator.

  59.   Enrique said

    Can someone help me please. I have an Iphone 3Gs and I tried to unlock it with the ipad firmware as many tutorials out there teach. But from one moment to the next, this iPhone does not want to go from the apple when it starts. I have tried to restart it as if it were tethered and no application works for me ... I have tried to reinstall it from iTunes with the original software and it does not work ...
    Is there any way to get this iphone back?

    Thanks in advance for your help.

  60.   Raul said

    Hi guys,

    Allow me a simple question:

    I have a 3G, with 3.0.1, jailbreaked and unlocked with redsn0w 0.8.

    Now I want to update it again. Which version do you recommend? 4.0, 4.1, 4.2 ??
    Can it be done again with redsn0w 0.8, or is a newer version needed?

    Sorry if you clarify it elsewhere, but despite having read other manuals, such as Redsn0w's is so old, I do not know if it is still current.

    Thank you very much in advance.

  61.   Louis duver said

    Hi Raul, I recommend you not to update your iPhone 3G, since when it goes to ios 4xx the phone will get super slow remember that the 3G only brings 128mb of RAM and it goes very slow then you will not want to use it. I say it from experience, , only with the ios4.2.1 it goes a little better you can do it with redsnow and you put an iPad baseband which is not recommended .. it will give you problems with iTunes .. Better switch to 3GS or better a 4 is like having a last car model

  62.   rads seven said

    @Tormo, 1. I am going to clarify this phrase that you put:
    "Can't you do a 4.2.1 with bb 5.13 or something like that?" If there is, could you send me a link and / or tutorial? »
    The main idea of ​​creating a Custom Firmware is to REMOVE the BaseBand from the FirmWare, so that when it is installed on the iPhone, it can preserve the BB it had before and is not updated.
    2.Stay away from any Custom FW that talks to the iPad BB.
    3.When you install Custom FW 4.2.1 to your iPhone, it will be as you want: iPhone 3GS FW 4.2.1 and with BB 05.13.04, I have done it on several iPhone 3GS, so I am sure what you say.
    4.Here I leave you the tutorial link with all the well explained steps on how to install a Custom FW 4.2.1 to an iPhone 3GS. The only problem is that you must have the original SIM from the operator. If you don't have it, it would be good if you get it or buy it on eBay, for example.

    http://xsellize.com/topic/98192-how-to-upgrade-iphone-3gs-421-using-custom-firmwareguide/

    If you do not have the operator's SIM you would have to look for a HACKTIVATED Custom FW, I NEVER recommend the hacktivados Custom FW, since they present many problems, performance, Push notification failures, more battery consumption, YouTube does not work, etc ...
    As I said before, it is better to buy a SIM from the Original operator, online on eBay, so these inconveniences will end and you can restore whenever you want because you have the Original SIM. ** Note: It does NOT matter that the SIM is not active, it works the same way. **

  63.   rads seven said

    @Tormo, BEFORE starting these procedures you must take into account if your iPhone is Old bootrom (MB Models) or if it is New Bootrom (MC Models):
    1. If the iPhone 3GS is old bootrom, you can Jailbreak with Redsn0w and you will be left Untethered !!!
    2. If the iPhone 3GS is new bootrom you must do it with the new Greenpois0n (Untethered) otherwise with Redsn0w you would be Tethered.
    3. If you get some kind of error for being 3GS new bootrom, then Jailbreak with Redsn0w and then run the Greenpois0n tool so that it becomes Untethered.
    Luck!!!!!!!!!!!
    Greetings from Costa Rica

  64.   rads seven said

    @BigBoy, thank God !!!! you have an iPhone FACTORY UNLOCKED !!!!! it will never crash. No, you do not run any risk when doing the Jailbreak, rather you open the iPhone Operating System to an infinite world of possibilities that could not be done before.
    @ Elp @ ci, if you care to be able to release it for another operator (to sell it in the future) repeat the process with tinyumbrella until you achieve it or look for a Custom FW, on the other hand, if you do not mind releasing it, you can restore it directly from iTunes and it will come back to life, but I will open the BaseBand up for you.
    @Enrique, FOLLOW THE SAME STEPS THAT I GAVE TO TORMO, and you will achieve what you are looking for, use the Redsn0w 0.9.6b6 to put the iPhone in DFU Mode and open iTunes, press the Shift key on Windows or Alt on Mac and click on the Restore button and select the Custom FW from the link I gave Tormo. then follow the other steps and you will have your iPhone again.

  65.   rads seven said

    @Raul, that's a very personal decision, I had an iPhone 3G with FW 3.1.3 when iOS 4 came out, I fell in love with multitasking, folders, iBooks, GameCenter, etc ...
    I knew in advance that iOS 4 is very heavy for an iPhone 3G and that it would make it even slower than it already was, but the improvements ended up prompting me to switch.
    Based on my lived experience, here are my conclusions:
    1.If these new functions are not indispensable in your life, DO NOT upgrade.
    2.if you finish convincing yourself to opt for these improvements DO NOT install any of the following iOS 4.0, 4.01, 4.0.2, 4.1
    3.the only one of these iOS that is worthwhile for the iPhone 3G is 4.2.1, why? Because it is the most stable, it is the least slow, it improves the battery consumption compared to the previous ones and includes a new technology that allows you to optimize the battery consumption when you are connected to the WIFI network and thus spend less current.

  66.   rads seven said

    @Raul, 4. to update to iOS 4.2.1 you must use Redsn0w 0.9.6b6 but be careful NOT to INSTALL the iPad BaseBand to your iPhone, that option now comes in redsn0w, it is for people who updated their iPhone 3G from iTunes with the original FW to version 4.1 and therefore your iPhone was locked, so they use the BB of the iPad to unlock it again and thus use it with any operator, *** the use of this BB disables the GPS ***.
    But in your case when you do the Jailbreak uncheck that option, since you must take advantage of the fact that you have an unlockable BaseBand.

    Now here I leave you the pages in the order that you must do it so that you stay with iPhone 3G FW 4.2.1 and with the BB that you had. Besides that, I will leave you other pages to optimize your iPhone, multitask it and activate the GameCenter:

    http://www.taringa.net/posts/downloads/8177526/iPhone-3G-firmware-4_2_1-sin-actualizar-el-baseband.html

    http://zeta.wordpress.com/2010/06/27/como-acelerar-el-iphone-3g-con-ios-4/

    http://www.esferaiphone.com/tutoriales/activar-boton-para-el-porcentaje-de-bateria-y-modo-camara-de-video-en-el-firmware-30/ (don't activate the camera, it doesn't work)

    http://www.clubifone.com/foro/showthread.php?t=93003

    http://tecnolatino.com/como-instalar-gamecenter-en-el-iphone-3g-bajo-ios-4-1/ (it's the same for 4.2.1)

    http://www.iphonefanatic.net/cydia-app-reviews/cydia-tweak-gc-patcher-iphone-3g-para-que-los-juegos-detecten-el-game-center/

    Luck!!!!!!!!
    Greetings from Costa Rica…

  67.   BigBoy said

    @radsiete thousand thanks for answering, then when I do the Jailbreak my phone will continue to work as is, only with the JAIL as you said an infinite world of benefits hahahaha. then jailbreak there I go. Greetings.

  68.   I'll be back said

    Redsiete, thank you very much for all the clarifications, it is nice to see people who help in this way. Last doubt, (there to see the mess I'm going to give) The sim that came to me with the iphone I threw it long ago, so I will have to ask for one, the phone is from Movistar, and I have several cards working at home movistar, wouldn't one of those be worth me? does it have to be a special SIM?

  69.   jose.vet said

    @radsiete PRESIDENT !!! ; D

  70.   rads seven said

    @Tormo, if you are sure that your iPhone is from Movistar, then go ahead, any SIM from Movistar will work for you.

    Greetings from Costa Rica

  71.   Raul said

    rads seven

    Thanks for your answer!!! (great links, thank you very much)

    The issue of wanting to update is not so much about moving to IOS4, as many applications are not available for FW as "old" as 3.0.1, and do not allow the update.

    Understanding what you have about the slowdown ... maybe it is more advisable to update only to 3.1.3?

    Thank you again.

  72.   Raul said

    I forgot to add that another reason why I would like to update to a more recent version is because Cydia has no longer worked for some time

    It gives errors when loading Sources and doing the Reload, because it gives a message that perhaps the version is too old.

  73.   I'll be back said

    Redsiete, I have completed the update successfully, THANK YOU for your attention and help !! Now everything works better for me, and well, I just started from scratch, thanks for everything!

  74.   clavius said

    There is something that I still can't understand, my BB is 02.15.04. I will have problems since according to I know there is no ulstrasnow for 4.2.1, I am very wrong? Can I use all the applications as in my FW 4.1 with Jailbreak ??. Salu2

  75.   Abel said

    Does anyone know if musclenerd is still working on the unlocks for the two other basebands?

  76.   Carlos said

    Hello, I have the iphone 4 4.1 bb 2.10.04 I want to upgrade it to 4.2 but without changing the bb for when the unlock comes out. How can I do it ? If I do, can I keep all the apps and tweaks that I have added? Thanks. Slds.

  77.   Enrique said

    Urgent ° !!! I did the whole process and I have an EMERGENCY CALL !! How do I now to unlock it?

    Thank you all!!

  78.   Enrique said

    I want to clarify that I got error 1013 and everything… I followed all the steps !! And with the forescat I see that the baseband did not go up but I cannot get out of emergency calls.

    Thank you

  79.   Gabi said

    I have an Iphone 4 version 4.2.1 8c148 model mc607y with firmware 03.10.01, can I follow this tutorial to jailbreak and release it?

  80.   Gabi said

    Hello friends,
    I have a little problem when I quit tinyumbrella I get this error as soon as I load
    Cannot Start TSS Service
    DO NOT TRY RESTORING YOUR DEVICE !!!
    C: / Windows / system32 / drivers / etc / hosts is not writable

    Does anyone know what can I do
    I have windows vista

    Thank you

  81.   sambitabonita said

    Yesterday I was stuck on the screen of the usb cable, I had to restore by obligation.
    Restore to 4.2.1, because I had read that there was no problem to do the jailbreak, I also read that if it was necessary to release that it could not be, but I took a risk and I had no problem. I restored it to 4.2.1, once this was done before doing the jailbreak I released it by IME that takes a minute or less ,,, and then I already jailbroken it with Greenpoison ,, I installed cydia and without any problem at all in no time. I have to say that I am new to the iPhone world, I have had it for a couple of months, and I was not very convinced that it was to be done well ,,, but I followed the steps of the tutorials and that's it. I also say that you have to waste time and look for good tutorials, because there are some that give you some complications ... ... or so it seems to me.
    I hope I have helped.
    A GREETING

  82.   karisto1979 said

    Pura vida radsiete, a query, I have a query, I'm from CR, I have an iphone3gs with 4.2.1 with the baseband 05.11.07 is already unlocked, it works well, but sometimes it loses signal, which baseband do you recommend? be the solution to my problem.

  83.   Ricardo said

    HELLO TO SEE WHO CAN HELP ME RECENTLY THEY RELEASED MY IPHONE 3G WITH THE BASEBAND 06.15.00 I AM WELL ALREADY RELEASED BUT I HAVE THE PROBLEM THAT MY IPHONE IS IN SECURE MODE BY SPIRINGBOARD AND I ALREADY UNINTALED SEVERAL THINGS WHAT THEMAS THEMAS THEMAS WHAT CAUSED ME THE ERROR AND NOW I DON'T KNOW THAT ASER SOMEONE CAN HELP ME

    THEY ALSO TOLD ME BY AI TO RESTORE IT BUT I'M AFRAID THAT IF I RESTORE IT, I WILL CHANGE THE BASEBAND AND I WILL NOT BE ABLE TO RELEASE IT AGAIN
    WHAT CAN I DO TO REMOVE IT SAFELY WITHOUT FAULTS OR RESTORE IT WITHOUT CHANGING THE BASEBAND?

  84.   Ricardo said

    HELLO TO SEE WHO CAN HELP ME RECENTLY THEY RELEASED MY IPHONE 3G BECAUSE I RESTORED IT AND LEFT IT WITH THE BASEBAN 05.14.02 I MYSELF ISE THE JAILBREAK WITHOUT KNOWING MUCH BUT NOW THEY LEFT IT WITH THE BASEBAND 06.15.00 I AM ALREADY GOOD I HAVE THE PROBLEM THAT MY IPHONE IS IN SAFE MODE BY SPRINGBOARD AND ALREADY UNINTALED SEVERAL THINGS LIKE THEMAS WHICH I THINK IS WHAT CAUSED THE ERROR AND NOW I DON'T KNOW THAT SOMEONE CAN HELP ME

    THEY ALSO TOLD ME BY AI TO RESTORE IT BUT I'M AFRAID THAT IF I RESTORE IT, I WILL CHANGE THE BASEBAND AND I WILL NOT BE ABLE TO RELEASE IT AGAIN
    WHAT CAN I DO TO REMOVE IT SAFELY WITHOUT FAULTS OR RESTORE IT WITHOUT CHANGING THE BASEBAND?

    MY IPHONE IS A 3G
    IOS 4.1
    BASEBAND 06.15.00