Tutorial: Downgrade from Baseband 06.15.00 to 05.13.xx on iPhone 3G

In Actualidad iPhone they have also left you a Little gift to the Three Wise Men, if you have an iPhone 3G and updated the baseband to 6.15.00 (iPad baseband) we are going to show you how to download it back to 05.13.xx

Why is it a gift? If you have installed baseband 6.15.00 your phone will not can be restored with an official firmware from Apple, therefore you will not be able to jailbreak new firmwares until tools to create custom firmwares appear. Besides the GPS stops working when you install baseband 6.15.00, which in most cases will also be solved.

You need:

-iPhone 3G with jailbreak and 5.8 bootloader
-Fuzzy band installed from Cydia
-afc2add installed from Cydia
-iFunbox (Windows) or DiskAid (Mac)
-Certified for use with Fuzzyband

    Tutorial:

    1. Connect the iPhone 3G to computer using USB cable

    2. Run Fuzzyband on the iPhone (without doing anything, it just exits again)

    3. Execute i-FunBox or diskaid and go to the path Applications / Fuzzyband.app, paste the file ICE2-06.15.00.cert that you have downloaded, if it does not work copy the folder on your desktop, copy the file and return it to go up.

    4. Now disconnect the iPhone from the computer and run Fuzzyband on your iPhone.

    In Fuzzyband, we will now see the current version of the baseband, (which should still be 06.15.00). But now you will have the option to downgrade to the version 05.13.xx.

    Do it!

    5. Go to Settings -> Information on your iPhone and check that your modem version is 05.13.xx (which can be unlocked via Ultrasn0w).

    Congratulations, your iPhone can now be updated normally via iTunes.

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    1.   Iker said

      It only works for 3G or also for 3GS?
      all the best

    2.   Halachaen said

      I'm afraid it only works for 3g, hopefully they'll get something for 3gs. A month ago Musclenerd commented that he was studying how to downgrade to 3gs, but nothing has been heard since.
      Greetings.

    3.   DavidS said

      A question in case I have not found out correctly .. Does this serve to keep the current firmware (4.2.1) and downgrade without restoring the iPhone?

      Thank you.

      1.    gnzl said

        my mother ...
        It is used for what the owner says, to downgrade the baseband, the firmware, nobody has said anything

    4.   deividhasselhof said

      Will something come out for those who have a 4.9 bootloader? To keep waiting to have gps again

    5.   Fabricio said

      I have the bootloader in 6.04… there is no solution or way to lower it to 5.8 as it says it has to be ???

    6.   GoNx said

      Send eggs ...
      I had been waiting for the baseband to be downgraded since, unconsciously, I updated to 4.2.1 and I only had to change the Baseband for the iPad to be able to use it with my Vodafone card ...
      Suddenly, yesterday, I disconnected it from the power while I was listening to the radio with the Top 40 App, it turned off and since then it has not started again, it only lets me enter DFU mode, I cannot enter Recovery mode in any way and On top of that, it only lights up when I connect the battery cable, to top it all, when I try to restore it with iTunes I get the error 1600, I tried with iREB ​​and it stays in "Waiting for iBSS".
      To top it off, just yesterday I got my Belkin case that I ordered a month ago and today they take this out !!!
      If anyone could help me I would really appreciate it!

      1.    gnzl said

        Gonx, put a custom firmware 4.1 in it
        In the SAM tutorial you have how to do it

    7.   Introduce your name... said

      What can I do if I have the 5.9 bootloader. Is there a solution?
      Thank you

    8.   GoNx said

      Thanks for answering Gnzl, but believe me, I have tried everything "probable" (xD).
      I have tried to restore with a custom firmware of 4.1 and 4.2.1, hacktivated, without hacktivar, with iPad baseband, without iPad baseband, and all I get is "Preparing iPhone for restoration" appears and appears error message 1600 ...
      I have tried with PwnageTool, with old versions, with redsn0w on both Windows and Mac, and I don't know what to do anymore ...
      The funny thing is that when I try to turn it on with the cable connected, the apple appears as if trying to load the OS but it never arrives and turns off, also, if while the apple is there I disconnect the cable, it turns off, it is as if the battery failed, however If I put it in DFU mode and unplug it and plug it in on another computer, it is still in DFU mode.
      It is very rare….

      1.    gnzl said

        Gonx and have you tried tinyumbrella, irecovery, easyirecovery, ireb…?

    9.   Astur said

      Thanks for the info! What I don't know is to look at what bootloader my 3G has!

    10.   GoNx said

      I have tried with tinyumbrella, but, based on the fact that I cannot enter recovery mode, but only in DFU, in tinyumbrella the Exit recovery mode option appears disabled, as for the others it is more of the same, if not I'm wrong, they all work to exit recovery mode, not DFU

      1.    gnzl said

        You have to be in recovery, because the DFU only comes out when restarting or updating with iTunes
        That's why I told you to use a 4.1 custom and when you get an error is when you use tinyumbrella

    11.   Astur said

      Well, no luck, Fuzzyband tells me that I have a 5.09 bootloader. CAWEN, to continue without GPS!

    12.   July said

      bootloader 5.8, since the 4 years that I have been working with iphones, and updating and reviewing bootloader, they will have passed through my hands without exaggerating thousands of iphones, and I have only had 2, with bootloader 5.8, so this news the headline attracts enough attention but it would have to have been, for the lucky ones to have an iphone 3g, (the great minority) and who also miraculously have a 5.8 bootloader, and what case of life they are looking at the page, a baseband downgrade came out hehehehehe, we will take it as news humor

    13.   Fabio said

      Let's see, I don't understand something. If I can downgrade, will it still be unlocked? (released for any company?)

    14.   dooku said

      The most important thing and to which little mention makes the news is Who has an iPhone 3g with the 5.8 bootloader? As friend Julio says, this news is only for the lucky ones, I mean, it is almost the same as if you have won the lottery of the child if you have blissful 5.8 bootloader.
      To keep waiting without gps ..

    15.   adrian said

      Well, I have an iphone 3g with a 5.8 bootloader and it works for me because the battery does not last at all and it was heated with the baseland 6.15

    16.   xavier viteri said

      Gnzl!
      As always I want to ask you something!
      Doing this with has any side effect to the iPhone 3g?
      I remember that when I put the FW of the ipad 3.2.2 and then it went up to the FW 06.15 there were mishaps with the battery, the GPS never failed me, after following a tutorial that was the best I have seen uploaded by you to restore the iphone and hack it activated by the friend who did the tutoring, my iphone 3g is 10 !!
      I don't want to screw it up but it's tempting to lower the FW to 05.13.xx
      If you can answer my questions, I will appreciate it a lot!
      Thanks in advance!

    17.   xavier viteri said

      How do I know if I have the bootloader 5.!
      Can a good friend of this community advise me on this?
      How to know, since I do not know, in this part if I am ignorant.
      XD

      1.    gnzl said

        Xavier, no problem, the bootloader tells you so fuzzyband

    18.   xavier viteri said

      I couldn't, the fuzzyband says NOT SUPPORTED
      Bootloader 06.04 on my iphone 3g
      I'm scrubbed… .but the iphone is fine!
      I can't complain but it would have been nice to have the option to download it to 05.13.XX

    19.   Orange said

      Gonx, For your iPhone to revive again, restore it with the original ios 4.1 from itunes shift + update, then it will give you error 1005 or something similar, therefore it will put the iPhone in recovery mode, disconnect it from the pc, reconnect it download tinnyumbrella, run it and select in the part of devices the device that comes out, it can come out with several letters or numbers or simply say iphone, it doesn't matter, you give exit recovery and voila you will have the iphone on emergency call until you put the chip on it original, if you do not have the original chip and you want to activate it, jailbreak it with the last redsn0w in ipsw select 4.2.1 and select the options of install cydia, battery percentage, multitasking, etc. of those you want but do not select install baseband from the ipad, nor deactivate, you put the iphone in dfu blablalba, when you turn on your iphone you will have it activated and you can release it with redsn0w (this is in your case because as you had done the baseban upload d of the ipad you will release it with the same one) to me exactly the same thing happened to me that you was desperate xd but now I have the solution and I want to share it, pst I had to read for about 8 hours ._. It was horrible xd anyway I hope it works for you, anything says here how it went (When you go to restore the iPhone to the original 4.1 you may get an error the first time, but try again and it will give you, it does not matter if you restore it in recovery mode or in dfu) Good luck!

    20.   Orange said

      I correct Up Shift + Restore, Greetings

    21.   salmy said

      Gnzl, I know it's a lot to ask for, but it scares me a lot to go up to 4.2.1 on my 3G Since I have 4.1 it doesn't give me more than problems, constant springboard crashes .. is it worth going up to 4.2.1 ?? My baseband now is 4.26.08, so I don't know exactly what steps I would have to take to get to 4.2.1 without losing the unlock ... I should do the normal 4.2.1 JB and then use this tutorial to lower the baseband to the iPad? I have looked at a lot of websites to see if there is a more or less direct and safe way and no luck! For me the unlock is the most fundamental> _>

    22.   mike9733 said

      I already did it and I went down 6.15.00 to 5.13.xx thanks it already works perfectly and the gps is the same

    23.   Adriel said

      I uploaded the basebar to my iphone 3gs with redsn0w and then I tried to update it through Itunes to bercon 4.2 and now it does not come out in a recovery mode, what can I do? Your comments and help

    24.   Leonard Betancourt said

      It doesn't help me, it says "Sorry, downgrading will only work with Baseband Bootloader 05.08" ANY OTHER SOLUTION?

    25.   andres said

      Gonx the same thing happened to me, what I did was first install the ios 4.2.1 by ultrasnow just giving the option to "put in dfu mode now" (the last one only) then it was installed (it still didn't work for me iphone) I went directly to itunes and with shft + restore you installed a CUSTOM firmware from 4.2.1 .. it seemed illogical to install a legal one by ultrasnow and another custom by itunes but it worked perfectly !!

    26.   Paul said

      If I have a 5.9 bootloader, is there some kind of solution?

    27.   Paul said

      If I have another bootloader is there some kind of optional solution?

    28.   Matias said

      Che, this post is great. I have a 3Gs, it wouldn't work, right? I want to be able to use GPS and it drives me crazy. Any solution regarding the GPS?
      Regards!!

    29.   Ricardo said

      I have the same gps problem on my iphone 3gs ios 4.2.1 bb 6.15 some fix or patch or tweack to solve this problem or restore with an original FW 4.3.1 in ITUNE then a customware to unlock it with redsn0w my mail drcajias@gmail.com

    30.   Felipe said

      Well, I just bought an iPhone 3G and trying to update it to 4.2.1 I learned many things but 20 thousand bad things have happened to me ahahaha because I do everything they tell me. ERROR mine I already know but hey the fact is that I put the baseband 6 and now I need to do everything they say here in this forum but I have no idea how to put everything that they name from cydia or anything someone who knows can describe it to me step by step and excuse me ignore it as a rookie thanks

    31.   Chicho said

      Hello, I am a lucky man, I have the 5.8 !!!
      but I have a doubt, what fuzzyband did I install ??? I have the firm 4.2.1 and the fuzzy that I have in cydia says that from 4.1, is it from 4.1 up, or from 4.1 down ???
      Thank you

    32.   xaos said

      Is there something for the 3GS with new boot?

    33.   mario said

      hello iphone-maniacs (including me), toi caught in the bb 06.15 pointer and I can't find solutions !!! someone something? to do the dowgrade? oh one but they say it is not suitable for 3gs ... what do we do? that the gps is one of the best options of this mobile ... and not being able to use it damn muxo ... I paid to have it released and it is seen that the xaval sap less than me .... so I screw it up ... how weird is

    34.   mario said

      I had gone well for a couple of days and then I was wrong where I was… weno, greetings and good luck! admin @ mariostudios is my mail, a little touch if you saveys something, thank you, I tmb if I find I will leave links

    35.   Caesar Salad said

      If I have a 6.2 bootloader, what do I do?

    36.   silvio said

      I HAVE THE 5.9 BOOTLOADER AND I WANT TO DOWNLOAD IT TO 5.8 STILL NOTHING CAME OUT ??? WE'RE MID 2011 AND NOBODY KNOWS ANYTHING JUM.

    37.   twill said

      if it works 😀 grx

    38.   mario gonzalez said

      hello for those who have an iphone 3g or 3gs with bootloader 06.04 and baseband 06.15.00 do not throw the iphone in the trash, just install Ultrasn0w from cydia restart the iphone and voila, you will have your signal again perfectly.

      If it helped you support my band http://www.bandabluff.com and twitter @bandabluff

    39.   inanimate said

      Yeaahhh !!! Tested and working (Iphone 3G-16Gb)… wifi, phone, gps (with Location only, 3G only and Edge only, tested one by one), messages, everything… BB 5.13.04 coming from 6.15 with BootL 5.08, FW 4.2.1. Thank you very much for the help !!!

    40.   Mario said

      Hello iphone-ros toi blocked with the bb 06.15 in iphone 3gs, there is some remedy to downgrade to be able to make the gps go….

    41.   wow said

      I am still waiting for that solution, I just hope that DEV-Tem does not lower its arms and that it will propose a solution to us soon. a greeting

    42.   RoberCan said

      Juerrrr, the excellent news, is appreciated,

      Here I am, come try one or the other, but I can't get my iphone down from baseband 6.15. Now I have to check if my bootloader is 5.08, although I am afraid it will not be, since following the tutorial, I am stuck at point 4, that is, for the second time in In Fuzzyband, but without the option to do downgrade to version 05.13.xx.
      I keep fighting ...

    43.   Abdo said

      Good morning, I would like to know if the downgrade is also feasible to lower the baseband from 06.15.00 to 05.12.xx.
      Thank you.

    44.   ephraim hernandez said

      I wonder if you have it in a version 4.2.1?

    45.   juan carlos said

      gonx, I imagine that your problem has already been solved ... since it has been many months since you published your problem with the iphone, well I will write how to solve your problem and it is very easy, just buy a new or used charging center as you see fit but that it is in good condition, what happened to you was that when you disconnected the idevice from the electricity source, it made a short where the usb cable is connected, when you have the problem that the iphone turns off when disconnected it is because it has broken down the load center as I said before …… I hope it will be of help for those who are having this problem today.

    46.   Leonardo said

      problems with my iPhone 3g 16gb I can't activate an internet data plan since the version it has is 4.2.1 and the firmware is 06.15.00 and the technician tells me that it cannot be updated because I run the risk the team dies 🙁 what do you recommend?

      1.    Juan said

        I have the same problem, but not only does it not get a signal, but it also does not find wifi. I can use it as a pendrive ,, jaa nothing else ,. some the solution please !!! I leave you my mail! mrpolini93@gmail.com

    47.   atpc said

      Hello,

      Does it work for a 3GS or is there a different procedure?

      Thank you

    48.   richard said

      hello i ask the same thing that atpc works for an iphone 3gs please help

    49.   Will said

      Hi there! It doesn't work for me and I'm going crazy because: my iphone 3g with 4.2.1 has a 5.09 bootloader and the fuzzyband doesn't work with this bootloadeer…. does anyone know the solution? (how to change it, etc ...)

      thanks in advance!

    50.   Javier said

      It remains to be clarified that this Downgrade method only works for BootLoader 5.8, which almost no one has.

      I mean, it doesn't work.

      1.    gnzl said

        Are you sure that information is missing? or have you not read before criticizing?

    51.   Ricardo said

      And for an iPhone 3G bb 6.15 but with bootloader 6.04, any suggestions? Is there a fuzzyband that allows the downgrade with this bootloader? Or some method to download the bootloader?
      Thanks in advance for your contributions

    52.   sery said

      I also have 6.4, is there any way to download iphone 3g 06.15.00).

    53.   Luis said

      Hello good, this interests me a lot since the phone with bb 06.15 ran out of service. How can I download the links without megaupload is closed.

    54.   mil said

      if the bootloader version says null, can it be done ???

    55.   cross said

      Damn, my iPhone 3GS is on emergency calls and it already has bb 06.15.00 and ios 4.1 and I can't make it so that I grab the sim card, it appears without service

      1.    kirbyto said

        Do the jailbreak again friend, the same thing happened to me, then use this tutorial to activate / release your device, the links come in the description of the video, it is very simple ... http://www.youtube.com/watch?v=52EY_nwAVcc&feature=related

    56.   Javier said

      Greetings I made a mistake and I need help I was jailbreaking my iphone 3gs, and in one of the blogs I read it said to use the ipad baseband, but now the phone restarts and is not recognized by itunes, .. is there any way to reverse the baseband original?

      1.    wow said

        There is no solution at the moment, the DevTeam already warned that it was irreversible. although some programmers worked on it but without results at least to my knowledge I have a 3gs with an ipad baseband and with ios 4.1 the only thing that does not work for me is the GPS

    57.   Oscar said

      help !!!
      look, my 3G has firmware 4.2.1 with baseban 6.15, my wifi doesn't work for me! So that's why I can't downgrade to 5.13 if I install with ifunbox and restart it gets stuck! The vdd already tried everything, I don't know what to do, does someone have a solution? tbm I would like to release it !! xfaaaa urgeeee

    58.   ivanue said

      I have a 3gs with firmware 5.1 and baseban 06.15.00 and it does not detect the SIM as I do so that I can grab it and try everything, please, I ask for your help ... 🙁

      1.    jose said

        in cydia there is an ultrasn0w fix 5.1.1. especially to fix the baseband 6.15.

    59.   Charly said

      Hello, I wanted to know from where I can download the certificate, since the ink of the page is made with Megaupload and as we all know it no longer works. Please if you have another link I would appreciate it

    60.   ivanue said

      look here you can download it http://www.mediafire.com/?xc8a9u4pzxazqen

    61.   Charly said

      Thank you very much Ivanue, let's try it

    62.   Mario studios said

      It is now possible to downgrade from 06.15 to 3gs !!