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[疑難求助] IOS 5.1.1升级问题

本人现在用着IOS4.3.5 (已越狱)但却怎么也升级不上 IOS 5.1.1..
升级时系统总会出现ERROR..
请各位大大帮帮忙!
do you try to restore your version first?
tried..still got error..
have you recovered it through other pc?
i juz got 1 pc..
but i used mine cousin pc tried once..
still error..
1. Use tinyumbrella
2. restore from your pc
3. then try to upgrade it

It should work
6# jerrylee965
wat mean restore from your pc?
can tell me more detail??
错误代码??
已经解决了~谢谢各位大大~
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