Can anyone please help me? I am trying to restore my iphone 3gs 3.1.3, I have down loaded the F/W from this site, and I hit shift restore in itunes, point it to the 3.1.3 F/W, it starts to restore but then says an unknown error has occurred. Has apple disabled allowing us to restore to the old versions that we are currently running? Also how would I get to my back up to restore in itunes? when I click on restore in itunes it wants to update to the newest version, and I want to stay on 3.1.3. Any help you can provide would be great. On a side note the reason I want to do this is because I installed the new version of Cydia, and I am getting errors, I want to go back to the old version of cydia.
Sorry, I am very new to this, how do I find that out. I can tell you that I don't have anything saved in Cydia, I didn't quite figure that out before I had this problem.
That is the site I am trying to download from, I get the error when trying to install, not download (sorry my mistake). Even after restarting my computer I am still getting the same error. Using windows XP Home.
Ok so if you want to unlock the latest you can go to is 4.0.2 stock firmware. You can go to 4.1 if you make a custom firmware with sn0wbreeze or pwnage tool. If you choose that route make sure you do not choose to activate the phone since you have a official sim to do the activation. You may want to stay away from 4.2.1 since if you have a new bootrom 3GS it will be a tethered jailbreak.
4.1 doesnt use the ipad firmware unless you specifically put it in a custom pwnage tool made firmware or install it with redsnow. Since you are on windows you can make a custom 4.1 firmware with sn0wbreeze 2.1 which will preserve your baseband so that you can still unlock after.
Can you point me in the right direction to some step by step proceedures on how to do this? also I have an old 3g that I updated to 4.1 with modem firmware 5.14.02 will the method work for this one also?
this one has
iphone3g 4.0 (8A293)
3g 4.0.1 (8A306)
3g 4.0.2 (8A400)
3G 4.1 (8B117)
3G 4.2.1 (8C148)
3G 4.2B3 (8C5115C)