
A lot of users have been asking for custom 4.0 firmwares for their i-devices. All of the custom firmwares below are basic firmwares with no custom logos, default partitions, and the default cydia package installed. The custom firmwares were made using the iPhone Dev Teams Updated Pwnagetool 4.0.1 which fixes iBooks problem.
iPhone 3GS Old Bootrom 4.0, Unactivated (Need legit att sim card), Default Logos, No Baseband Update
http://www.multiupload.com/DPMX950U2Y
iPhone 3GS Old Bootrom 4.0, Hacktivated (No legit sim card needed), Default logos, No Baseband Update
http://www.multiupload.com/JKEU2PISEQ
FAQ:
- You can only use these firmwares on an iPhone 3GS old bootrom. If you have an iphone 3gs that has a serial number XX938XXXXXX or higher it’s a new bootrom, if its XX937XXXXXX or less you can use one of the firmwares above.
- It is recommended that you be on firmware 3.1.2 and jailbroken with blackra1n or redns0w. That way you can just put your iphone in recovery mode and restore like normal.
- If you’ve never jailbroken your iphone 3gs but have a compatible one, put your iphone in dfu mode (How To HERE) and then restore using one of the firmwares from above.






