Impossible 3GS Issues

hello all!

iphone 3gs won't go past apple logo @ startup. have tried restoring several times. itunes claims has been successful, problem remains nevertheless.

have once or twice been successful syncing iphone. there have been issues, , typically lose data whenever plug thing pc.

don't know if it's related, itunes won't let me restore backup, either.

if help, i'd appreciative , awestruck!

 

what firmware version trying restore to? doing stock restore or custom ipsw?

if it's stuck @ apple logo it's hardware issue. i've ran several 3g/3gs models had faulty sensor or #3 connector. phone acts normal in itunes restores, etc won't pass apple logo.

 

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