Category Archives: downgrade 6.15.00 to 5.13.04

Downgrade Baseband 6.15.00 to 5.13.04 and unlock with ultrasn0w

apple iphone 3GS, diskaid, downgrade 6.15.00 to 5.13.04, fuzzyband, fuzzyband downgrade, i-funbox, ice2-06.15.00.cert, iphone 3gs unlock, ultrasn0w March 24, 2012 Leave a comment

UPDATE- YOU NEED TO USE SN0WBREEZE 2.9.3 for creating ipsw with ipad baseband on iOs 5.1 on windows.

First of all lets be clear that this method will only work for iPhone 3G with bootloader version 5.08 (5.8)! Otherwise, you can consider this.
You can quickly check your bootloader version by using TinyUmbrella. It should show your bootloader version right away. Alternatively, you can also use f0recast. The screenshot below shows an iPhone 3G with bootloader version 5.9.

FOR THIS THING TO WORK, YOU SHOULD HAVE UGRADED YOUR IPHONE TO IPAD BASEBAND 6.15.00 FIRST, IF NOT THEN GO TO THIS POST AND DO IT….

UPGRADE TO IPHONE BASEBAND

Lets F*** that unlock…
You need!

  1. Jailbroken iPhone 3G
  2. Fuzzyband – install this from Cydia
  3. afc2add – install this from Cydia
  4. i-Funbox – a file explorer for iPhone, Mac users can use DiskAid
  5. 6.15.00 certificate (ICE2-06.15.00.cert) for Fuzzyband

Steps:

  1. Launch Fuzzyband after installing the app via Cydia.
  2. Connect your iPhone to the computer.
  3. Launch i-FunBox and select File, then go to Applications/Fuzzyband.app, right-click and then select Copy from PC.
  4. Copy ICE2-06.15.00.cert you have downloaded earlier to this location
  5. Go back to Fuzzyband and you can now begin the downgrade process. If the downgrade is successfully, you should see “I Haz Downgrade”
  6. You can now unlock it with ultrasn0w and solve your GPS issue, error during restore etc.

if you have done everything alright, you should be able to use your phone…

HOPE I HELPED….