Q: does the latest itunes compatible with my 4.3.3 ios iphone 3g version? it's already update but still can't restore..

Hello, azlarosebi. 

Thank you for visiting Apple Support Communities. 

The current version of iTunes will support your iOS device.  If you are having issues updating or restoring your device, take a look at the troubleshooting steps in the articles below. 

If you can't update or restore your iOS device

http://support.apple.com/kb/ht1808

Resolve iOS update and restore errors in iTunes

http://support.apple.com/kb/ts1275

If you received a specific error number or message, see the section labeled Get more help in the article above. 

Cheers,

Jason H.