So I downloaded the umbrella program, I clicked on "start tss server" then clicked on "save my shsh" then clicked on "display shshs" and it saved iPhone3GS 4.1 (8B117)-4031533395446
I did it just to have them saved just in case I need to restore for x reason eventually.

I did the same to a 3G I just bought because its running 4.1 and I thought I could somehow downgrade to 4.0.2 to unlock. Honestly I bought it for cheap from the original owner but I want to unlock it to give it to a friend who has T-Mobile.

Please guys if u can help me out or just point me in the right direction I'd really appreciate it !!

Thanks in advance

Originally Posted by LS6_5SPD

So I downloaded the umbrella program, I clicked on "start tss server" then clicked on "save my shsh" then clicked on "display shshs" and it saved iPhone3GS 4.1 (8B117)-4031533395446
I did it just to have them saved just in case I need to restore for x reason eventually.

I did the same to a 3G I just bought because its running 4.1 and I thought I could somehow downgrade to 4.0.2 to unlock. Honestly I bought it for cheap from the original owner but I want to unlock it to give it to a friend who has T-Mobile.

Please guys if u can help me out or just point me in the right direction I'd really appreciate it !!

Apple is no longer signing 4.0.2 (or older than 4.1) - For your 3GS you need to have requested a SHSH while they were still signing the older iOS versions.

3G doesn't really require a SHSH, it is only enforced by iTunes on iOS 4.x the actual 3G iPhone doesn't check the SHSH in hardware like the 3GS does - if you try and restore iOS 3.1.3 for example, it will work fine without a SHSH.

thank for replying dude.. so for the 3G all I need to do is restore to 4.0.2??

Originally Posted by LS6_5SPD

thank for replying dude.. so for the 3G all I need to do is restore to 4.0.2??

No, you should restore to 3.1.3 - that will work

However, you have next to zero chance of unlocking a 3G that has been upgraded to 4.1. I hope you checked the serial number was lower than xx827 before you purchased it - otherwise you might as well give up (or sell it to a hardware guy)