Hey folks many people may be on IOS4.0.1 or4.0.1 or on 3.1.3 on iPhone 3GS and are scared to Update to ios4.1 or 4.2.1 due to they will hvae to update their baseband to 6.15.00 which has got many issues. Like battery Drainage Issues, GPRS Issues and e.t.c. We came up with a solution for those who don’t want to update their base band to the latest one but they want to enjoy IOS4.xx on their iDevice and it’s Features. Now you can do all this with just following these simple steps.
Download Custom ios4.2.1 For iPhone4
Download Custom Firmware ios4.2.1 For iPhone3GS
Now Press Shift+Restore for Windows User
Now Press ALT+Restore For MAC users
when you will press, so it will say to Browse for the firmware. Now Browse it Where you have saved it.
Now Restore it with iTunes.Dont Press update or less you will update the baseband just restore to it.
You wont be hacktivated after doing this. You will end up on Emergency Lock Screen. So use Redsnow0.9.6b6 to Jailbreak and Ultrasn0w to Unlock.
When you will be done you will soon have the old baseband and the new Firmware which will be IOS4.2.1.
This 3GS didn’t had any SHSH Blobs saved but I will recommend you to have the SHSH blobs saved before you Attempt any thing. I bought it from some market and was on the lock screen and disabled on Lock Screen. If you think this is fake so try at your own.
We have done this on iPhone 3GS and 4 and we had a success.
Important: We made these Firmware are made from PWNAGE TOOL By Unofficial Bundles so try at your own risk. We wont be responsible if you update you baseband or you do any thing with your Device.