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How To: Reflash 06.15.00 Baseband With RedSn0w 0.9.9b6

October 20, 2011 by Jaden Easton-Ellett 20 Comments

If you were running the 06.15.00 baseband on your iPhone 3GS and accidentally updated to the stock iOS 5 firmware, your baseband is most likely in an inconsistent state. Meaning you will either be unable to connect to a cell phone tower or you will have troubles maintaining your 3G connection. This is because once you update to the 06.15.00 baseband, you can cannot downgrade it to a normal iPhone baseband without running into major troubles.

reflash 06.15.00 baseband

In order to fix this error you will need to reflash the 06.15.00 baseband on your iPhone 3GS using RedSn0w. After reflashing the 06.15.00 baseband using RedSn0w you should no longer have any troubles with your baseband. The Dev-Team noted, in their changelog for UltraSn0w 1.2.4, that you can use any version of RedSn0w past version 0.9.9b4 to reflash the 06.15.00 baseband to fix any errors associated with updating to the stock iOS 5 firmware with on the 06.15.00 baseband.

Some iPhone3GS users with the 06.15 baseband may have tried to install iOS5 using a stock IPSW (even though you should never ever try to use a stock IPSW if you’re an ultrasn0w unlocker). If you did try this, your baseband is probably in an inconsistent state, and you’ll need to reflash the 06.15 baseband again (using redsn0w). Be very careful if you use redsn0w to reflash the iPad baseband — don’t interrupt the process! And please avoid using stock IPSWs in the future. Unlockers should never go near stock IPSWs. If you need to use redsn0w for any of the above tasks, please make sure it’s version 0.9.9b4 or higher.

In this how to guide from iJailbreak.com you will learn how to reflash the 06.15.00 baseband on your iPhone 3GS running the iOS 5 firmware.

Note: As I do not have an iPhone 3GS I am not able to verify if the steps in this how to guide are exactly in the right order. Please let me know if you notice any errors following this how to guide.

How To Reflash 06.15.00 baseband

Step 1) – The first thing you must do is download RedSn0w 0.9.9b6 which is compatible with both Windows and Mac OS X from the iJailbreak Downloads Section.

Step 2) – When RedSn0w has downloaded you will need to launch RedSn0w.

Step 3) – Once RedSn0w is up and running you will need to click the Extras Button followed by the Select IPSW Button. Upon clicking the Select IPSW Button you will need to select your iPhone 3GS’ iOS firmware file (the firmware it is currently running… most likely iOS 5). If you do not have your iPhone 3GS’ firmware file please download it from the iJailbreak Downloads Section.

Step 4) – After you have selected the iPhone 3GS iOS firmware file you will need to go back to the main menu and click the Jailbreak Button.

Step 5) – You will now need to put your iPhone 3GS into DFU mode. Read the instructions and click the Next Button to begin the DFU mode process.

Step 6) – Once your iPhone 3GS is in DFU mode you can select options to customize your Jailbreak. You will need to select the Reflash 06.15.00 baseband option and uncheck the Install Cydia option.

Step 7) – After you have selected the Reflash 06.15.00 baseband option, click the Next Button and RedSn0w will begin re-jailbreaking/re-flashing your iPhone 3GS’ baseband.

After the process is complete you should notice your iPhone 3GS should function correctly and any 3G connection issues/service issues should be fixed. Please let us know if this how to guide on reflashing the 06.15.00 baseband on your iPhone 3GS worked for you in the comments section below…

Comments

  1. Richardschmd says

    October 20, 2011 at 9:28 pm

    Hi

    I have tried this fix but unfortunately the problem still persists

    Thanks
    Richard

  2. Furqanbangash says

    October 20, 2011 at 10:33 pm

    Does this works on the iPhone 4??? i have upgraded to iOS 5 and now ma Gevey sim doesnt work anymore…. Please let me know if there is any solution to go back to the previous baseband…

  3. Richardschmd says

    October 21, 2011 at 12:55 am

    This is how i got my Gps working again, My phone was already jailbroke on ios 5

    Put
    my phone into DFU mode ran redsn0w unticked all box’s except for
    de-activate (in musclenerd tweet he says the fix only installs when
    iphone is Hacktivated)

    once that was done phone came on saying
    waiting for activation. So i put phone back into DFU mode ran redsn0w
    again unticking ALL box’s, once redsn0w finished and phone came on it
    said No Service but after installing Ultrasn0w i got reception and no
    wifi/gps dropout

  4. guillermo0916 says

    October 21, 2011 at 1:17 am

    thanks it work just fine,,,
    :) thanks a lot 

  5. ron2k_1 says

    October 21, 2011 at 7:40 am

    Nope, there is not.  The iPad bb is exclusive to 3GS as the iPad bb firmware is the very same used by the 3GS only.  So, what you had to do is upgrade to iOS5 but from a custom firmware using sn0wbreese, pwnagetools or now it can be done with Redsn0w, so you could have kept your previous basebands.  And although you may have the blobs for anything prior to 4.3.5, which means you can downgrade, the baseband will remain the same.

    So for now, you can only wait for Gevey to bring a new product that is compatible with your new baseband.

    Sorry,

    Ron

  6. Furqanbangash says

    October 21, 2011 at 9:53 pm

    thank u so much for the reply. After all the searching and coordination with the experts.. I am finally gonna wait for the Gevey or the unlock for this new baseband. till then m gonna use ma phone as an ipod i guess… :( 

  7. Midrich says

    October 22, 2011 at 6:15 am

    Hello..
    Should i reflash my 06.15.00 ipad baseband beafore the jailbreak process?
    Thanks

  8. Fida Mohammad Khan Bangash says

    October 22, 2011 at 12:25 pm

    i got iphone 4 with baseband 4.10.01 with firmware 4.3.5 without any saved shsh blobs…i have unlocked it through Gevy sim but i am reluctant to update to ios 5 due to doubt,

    if i upgrade to ios 5 with custom firmware, will it be unlocked with Gevy sim?shall i upgrade now or wait for untethered one becz i m tired of this tethered damn job…?
    i havent yet been through any reboot problem yet but still its a headache..keep my iphone all time charged..so any untethered one…?

  9. Anonymous says

    October 22, 2011 at 1:42 pm

    When will there finally be a downgrade option for the 06.15.00 baseband for the new bootrom on the 3GS.

  10. Telinir says

    October 24, 2011 at 9:03 pm

    Hey thanks guys, I followed every step carefully and it worked like a charm. :)
    Thanks a lot guys!

  11. Mattao says

    October 24, 2011 at 11:37 pm

    Fetching Ipad baseband is really slow. I’ve seen on the net there is a way to DL and stock locally the baseband file on a PC to accelerate this step.
    Is there a way to do so on a mac?

  12. Mattao says

    October 24, 2011 at 11:38 pm

    what is the thing to do when you got: “Exploit Failed” message

  13. Elie says

    October 26, 2011 at 4:18 pm

    when i put the iphone in dfu mode im not getting the reflash 6.15.00 options :/ plz help

  14. Whooajenny says

    October 28, 2011 at 4:52 pm

    worked like a charm! love it! thanks!

  15. Asafa says

    October 28, 2011 at 9:29 pm

    work like a charm… awesome stuff…. i re-installed the ipad basebad/flash my iphone, then i jailbreaked it after… my iphone unlock is finally working on my device…

  16. Michael Hanek says

    November 1, 2011 at 3:45 am

    excellent guid! worked great!

  17. Michael van der Burg says

    January 3, 2012 at 2:22 pm

    I have done the reflash after problems with unlocking and, after reboot, the provider was popping up!!

    Worked like a charme!!

  18. Teo says

    September 19, 2012 at 8:55 pm

    Great!!! it works amazingly!!
    Thanks for solving an old and big trouble.

  19. moosa says

    June 17, 2013 at 6:53 am

    sir my 3gs goes back to the recovery mode after the activating screen with a pineapple this is happening every time also i have no firmware installed in my 3gs please help

  20. Mustafa says

    October 19, 2013 at 6:54 pm

    i have a 1015 error, how can i fixx it?

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