Today an update to NES rendered the app unusable, crashing it to the SpringBoard every time. Here's what you do. Install Link Identity Editor from Cydia. SSH into your iPod and run the following command... Code: ldid -S /Applications/NES.app/NES Basically what happened was that the repo or NerveGas forgot to Fake sign the application. This does it for you. For other applications, just replace NES.app with namehere.app and the NES with whatever the executable is called.