gsFix is a small app written for OS X that was intended to fix a common problem with jailbreakers - the app TinyUmbrella would automatically modify the computer’s hosts file to redirect a server accessed by iTunes during iOS upgrades and restores to the Cydia server. This server is no longer usable due to changes in the restoration system in iOS 5, so users only receive errors with this hosts file entry set. Newer versions of TinyUmbrella no longer do this, and therefore gsFix is no longer supported.