Tutorial: How to Downgrade 3.1.3 to 3.1.2 WITHOUT Cydia Hashes
Here's the link its not mine but it worked great
Downgrade Iphone 3gs Baseband 05.12.01 from 3.1.3 to 3.1.2 and jailbreak without SHSH
- 04-28-2010, 04:31 PM #2
Reading the full thread, nobody got it to work b/c it doesn't work. You can't do a restore on a 3GS with iTunes not connected to the internet, and if you do it gives an error. If you are connected to the internet and do a shift+restore on a 3.1.2 it says device not eligible.
The method doesn't work. Downgrade Iphone 3gs Baseband 05.12.01 from 3.1.3 to 3.1.2 and jailbreak without SHSH - Page 26