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Thread: 3GS on 4.0 - 05.11 Upgrade
04-08-2011, 01:45 PM #1
3GS on 4.0 - 05.11 Upgrade
My friend wants me to upgrade the firmware on his iPhone 3GS which is at 4.0. He doesn't want to lose his unlock however - he's on baseband 05.11
How high can I take up the firmware, which jailbreak should I use at that point and will it create the GPS problem I've read about.
Thanks for the knowledgeI thought my carrier was bad til I got a new web host
04-08-2011, 01:50 PM #2
Use pwnage tool or snowbreeze to make a custom firmware and restore to that. That way you can preserve your baseband and still unlock. I would suggest a custom 4.2.1 right now though as ultrasnow has issues on 4.3.1. Do you have 4.2.1 SHSH?
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04-08-2011, 03:11 PM #3
I haven't seen his iPhone yet, but am hoping when open Cydia I'll See the 4.2.1 in green
It's been awhile since used PwnageTool, but all I do is download custom/Apple 4.2.1 firmware. Run PwnageTool and point to that custom firmware. Then plug in iPhone and right click restore and point to ipsw that PwnageTool created correct?
Also, if I don't see 4.2.1 in green then can't do it cause its too late or would Tiny Umbrella come to rescue?
Thanks again for the infoI thought my carrier was bad til I got a new web host
04-08-2011, 08:29 PM #4
Ya, you would need 4.2.1 SHSH to restore to a custom 4.2.1. That would be the ideal thing right now. If you must you can still go to a custom 4.3.1 but you will need to install ultrasnow and a ultrasnow fixer from the source cydia.push.info.