How to Update iPhone 4, 3GS to iOS 6 and Preserve Baseband ? Earlier today, we posted that the iPhone Dev-team has released Redsn0w 0.9.15 b1 with many new features. Fortunately, this updated version of redsn0w also supports the preservation of basebands. Unlike previous developer version, you can update your iPhone 3GS and 4 to iOS 6 while preserving basebands, so you can use Ultrasn0w and Gevey Sim to unlock your iPhone.
Before proceeding, please make sure that Ultrasn0w is not updated to support iOS 6. Moreover, Applen’berry also has not tested the Gevey Sim on iOS 6, so you might end up with locked device. But Dev-team will soon release the update to Ultrasn0w to support iOS 6. And you can also use the Ultrasn0w fixer for now.
How to Update iPhone 4, 3GS to iOS 6 and Preserve Baseband :
However, If you want to Update iPhone 4, 3GS to iOS 6 and Preserve Baseband, follow the instructions below.
Step 2: Download iOS 6 for your iPhone 3Gs and 4 from links here.
Step 3: After downloading all the links,
- Windows users: Extract the Redsn0w and “Run as Administrator”
- Mac Users: Right Click and open the “Redsn0w”
Step 4: After opening the Redsn0w, Click on “Extras”
Step 5: Select the last option “ Even More”
Step 6: Now, Select the top most option, which is “Restore”
Step 7: Click on “IPSW” and browse for already downloaded iOS 6.
Step 8: Redsn0w will give you a warning about “Modifying IPSW” which is basically the preservation of basebands. Click on “YES”
Step 9: Connect your iPhone with computer because “PWNED DFU mode” is required to create custom firmware file.
Step 10: After connecting your iPhone, Turn it off and click on “Next”
Step 11: Follow the on screen instructions carefully to put your iPhone in DFU mode.
Step 12: Once you have successfully entered in DFU Mode, Redsn0w will create the custom firmware file with preserved basebands.
Step 13: After the completion of Process, Redsn0w will update you.
That’s it! You can now restore your iPhone using custom firmware file from iTunes.
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