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Discussion in 'Jailbreaks and iOS Hacks' started by Nick0912, Nov 9, 2010.
Will that mess up the jailbreak and unlock on a 3GS?
Should be avoided on a jailbroken phone.
What will happen?
you won't be able to boot up the phone. at all.
you will therefore need to restore, which if done incorrectly could mean that your phone is not unlockable until a new ultrasn0w is released
Ok so I should erase everything manually?
What do you want to do?
I have intent to sell so I want to delete all music, apps, my email accounts, app store account, and anything with personal data on it.
Restore via iTunes (if unlock is unnecessary), otherwise 'rejailbreak' with something like pwnage tool.
when you 'reinstall' iOS, you are effectively formatting the iPhone. Some will say that you should do this via DFU, I have no opinion as to whether DFU is required or not.
I'm on a PC so will pwnage tool work?
No. Pwnage tool unfortunately only works on a mac.
Is unlock necessary?
Yes unlock is neccessary.
If you have any friends with a mac, you can ask them to use pwnage tool for you to make a custom IPSW which you can use in windows with redsn0w.
What SHSH blobs have you saved?
I have 4.0 and 4.0.1 saved with tinyumbrella and Cydia has 4.0, 4.0.1, 4.0.2, and 4.1 saved for me
restore your phone to 4.0.x through iTunes and TU and that won't muck up the baseband that you must've preserved.
then set up phone as new.
then jailbreak (or upgrade to 4.1 SAFELY without mucking up the Basebandn EDIT: I don't think this is possible at the moment) and unlock.
TU doesn't preserve the baseband on a 3GS. Just iPhone 4.
It's better to restore to custom 4.1 created by Pwnage IMO. Download one online and then use redsnow on windows to put into limerained dfu mode and restore to the custom jb 4.1 thru iTunes.
you might want to follow this guide
here to downgrade (just in case you wanted to know)
Ok thanks for all the help.