My power button not functioning anymore. and today i accidentally update cydia (still in iOS 4.1) and now I am stuck in infinite loop at apple logo screen. iTunes won't detect my iPhone and thus I have no idea how to do a full restore. The main problem is that I can't completely switch off the phone because power button not functioning.

Any suggestion how to solve the problem?

Need help here. Recently I can't download nor update any apps from iPhone AppStore. Everytime I tried to download an app, it will prompt me "Unable to download", ask me to connect to iTunes on computer then I can download. But then i'm still unable to download from iPhone. Each time I need to download from pc iTunes then sync to iPhone it is really troublesome. Any idea why is it so?