U
Unicom
Guest
Hi, I have 2 iphone 3gs 3.1.2 running ok, one goes recovery mode if I turn on and other working fine. I was trying to upgrade to 3.1.3 but getting 3194 error. I allready save the shshs safely with tinyumbrella and when I go to cydia i can see the msg: This device has SHSHs on file for iPhone OS: 4.0. Now can i upgrade to os 4.0 and able to unlock or safe downgarde to 3.1.3. Please need step by step instruction.
Thanks
Thanks