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Re-flashing the 06.15.00 iPhone 3GS BaseBand

November 2, 2011 24 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   or  Windows

Get your iOS IPSW firmware file

– iPhone 3GS iOS 5.1.1

– iPhone 3GS iOS 5.1

– iPhone 3GS iOS 5.0.1

– update  iTunes

 

Flashing The Baseband

– Launch redsnow – click ‘extras’

redn0w-launch

redn0w-launch

 

– click ‘Select IPSW’ – navigate to the downloaded IPSW from above (hear it is iOS 5.1) – ‘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.

 

 

 

Cats: ios, Tech Tags: 3gs, baseband, ios, iphone, jailbreak

Tags

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