Re-flashing the 06.15.00 iPhone 3GS BaseBand

November 2, 2011 18 Comments

Only for 3GS users with 6.15.00 bb or those that want 6.15.00 and know about potential loss of GPS. Very Important that you have old boot rom - new boot rom may/will likely kill the GPS functionality on the iPhone.

If you accidentally tried to upgrade your iphone 3GS to iOS5 through stock official IPSW through iTunes on an already jailbroken iPhone with a baseband of 06.15.00 things are not going to be smooth in terms of service and reception and may require a ‘re-flash’ aka a re-install 0f the 06.15.00 baseband.

The baseband may be inconsistent and lose signal or carrier and your iPhone may be caught in a recovery loop in iTunes.

Process

So what you will need:

iOS & redsn0w Downloads

Get the latest Redsn0w   — Mac OSX redsn0w 0.9.10b8b  or  Windows redsn0w 0.9.10b8b
- iPhone 3GS iOS 5.1
- updated iTunes

 

Flashing The Baseband

- Launch redsnow – click ‘extras’

redn0w-launch

redn0w-launch

 

- click ‘Select IPSW’ – navigate to the downloaded ‘iPhone2,1_5.1_9B176_Restore.ipsw’ – OK

iphone-3gs-baseband

iphone-3gs-baseband

 

- answer the model boot-room question – if you don’t know follow the boot rom guide here

old-new-boot-rom-iphone-3gs

old-new-boot-rom-iphone-3gs

 

- click ‘back’ click ‘jailbreak’

- click ‘install ipad baseband’

install-ipad-baseband-615

install-ipad-baseband-615

 

Read the warning – follow redsn0w instructions to get to DFU mode and do not interrupt the process.

ipad-baseband-confirmation

ipad-baseband-confirmation

 

After it has flashed – you can use the same method above and use the ‘Install Cydia’ option and then when the iphone reboots install ultrasn0w.

 

 

 

Related posts:

  1. Upgrade jailbroken iPhone to iOS 5.1.1 and preserve baseband with redsn0w
  2. Recover and Restore iPhone 3GS with Error 1015 stuck in Recovery Mode in iTunes
  3. Recover an iPhone Stuck or Hung In DFU Recovery mode from iTunes
  4. How to find out which Boot Rom Am I ? Old or New for iPhone 3GS
  5. The iphone ipad could not be restored. This device isn’t eligible for the requested build.
iphone ipad, Tech
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  • Orez72

    hi
    I have 3GS with BB 6.15.00 and by mistake I had upgraded it to IOS 5 through Itunse and now It is stuck what should I do

  • KenJi

    hi,i have a 3GS with baseband 05.13.04,(i think should be OLDBOOTROM~because my serial number was 88928)~now only ios 4~so now i need to preserve the ipsw by redsn0w~~then i go to DFU mode~restore my ios to 5.0.1, then jailbreak it with redsn0w and go cydia download the ultrasn0w then already can unlock my 3gs? just that easy?@@”or i need to install ipad baseband and make the baseband to 6.15.00?

    • http://coolestguyplanettech.com Neil Gee

      since your baseband is already unlockable then I wouldn’t bother changing the baseband

  • Crazydude

    just wondering mate is it possible to flash the baseband AND install cydia in the same process? ticking both boxes would save a lot of time, im following your instructions but youd think you could install cydia in the one go.

    • http://coolestguyplanettech.com Neil Gee

      you can try and let me know should be OK

  • huns key

    bro..i had completed all the instruction, however there is no signal for the service provider of my telco.in setting-general-about its state network-n/a,carrier-n/a & ICCID-no sim..
    plz if u have any solution or recommendation 

  • Iury

    I have the iphone 3GS (81944**) IOS 5.0.1 on BB 6.15 jailbreaked and unlocked. I have used redsn0w_win_0.9.10b2 to jailbreak with ipad baseband.

    Before i tried it with redsn0w_win_0.9.10b3 and i never had it done. Now with the older one i done it.

  • Akash Mishra

    Thanks alot…u r rocking man…actually I have upgraded my Iphn-3GS OS to 5.0 by iYunes…my fone was stucked, now I have upgraded it by method given by u…its woking f9, so I learnt alot about I-phn….Thanks once again for writing so much helpful blogs……:)

  • Vitruvious

    (i would like to preface this by saying that when i first downloaded the custom ipsw from the link on this website,coolestguyplanet, it sent me to one with iOS 5.0? i happened to notice and redownloaded it and it and it came up as 5.0.1…weird)   wow. so i followed these directions and links but accidentally installed cydia along with the iPad flash (at the same time). When my iPhone rebooted i had the iPad baseband but the cydia icon was white. I went to iPhone Dev Teams website(thanks!) and got the latest jailbreak and rejailbroke my iPhone. I waited and crossed my fingers to see the “searching” disappear and they finally did. I immediately went to check the gps service and it was GOOD. it got me within a footstep. I did notice though that when I turned on the gps my signal bars went back to searching..i guess they can’t work at the same time…no biggie. thanks NEIL! i searched for hours for the right website to find the right process, and you seemed to take every possibility into account!
    IPHONE 3GS 32gb
    EAGERLY UPGRADED TO 5.0.1 from 4.sumthin, fucking up baseband
    NEW BOOTROM
    SERIAL #’s 3-4   xx101xxxxx

  • Guy

    Thanks so much..worked like a charm :) … I’m running on T-mobile with 3Gs..the GPS isn’t working correctly but who cares..cheers

  • Nadine

    Hi followed all the steps outlined and still getting ‘searching’ cannot pick up local provider. Please help

  • Tmuine

    Hi, I have an unlocked/jailbreak iphone 3GS, and just upgraded to 4.2.1.   Stupid me, I lost the unlocked part.  Now I can not use it on TMobile anymore.  Therefore, I want to upgrade it to IOS5 but I didn’t see the baseband listed here (05.15.04).  What should I do now, Please help.  I just want to use this iphone with TMobile.  Will I be able to update it to IOS5 and unlock it for TMobile.  Thank you very much!

  • Dlangteau

    I can’t tell you how grateful I am that you posted this – My daughter updated her iphone that was jailbroken on ios5 and ipad baseband. It messed it up royally – and my frantic attempts to fix it (over the course of 12 hours) I am sure did not help its situation. I  was ready to give up – when I saw your post. Followed it to a “t” and it worked perfectly. The thing that was different about it from what I had tried in the past was flashing the baseband FIRST and then installing Cydia on the second pass – also using the custom firmware – I had tried others – but your method worked perfectly. THANK YOU!!!!! (My daughter thanks you as well!!!!0

  • Rene

    Thanks for the instructions and help it worked great much appreciated, I had to turn off the 3g data first though.

  • http://twitter.com/Samster70 Scott Edwards

    Next Challenge,
    The above process works fine on my 3GS, its a tethered boot though, which I dont like.
    I decided to pay for a network unlock, I thought I could just re-install IOS5.1 and away to go, but it cant find a SIM card.

    Should that happen?

  • Juergen Utess

    Quick question: I have an iPhone 3GS on 5.0.1 with the iPad baseband  (06.15.00). Now I actually got the phone unlocked from my carrier because my contract was up. Can I safely just upgrade to 5.1 via iTunes and then get the 5.1 baseband or will I have to stick with my jailbroken phone. (The reason, I’d like to go back to original is mainly the GPS functionality.)

    • Uyi

      You never come back to BB 5.16 until DEV-TEAM release the tools. I’m waiting here also..