Fixes for iPhone App install problems

Update 9/14/08: Fixed.

I think the problems describe here are a variant of the “unknown error” issues I’ve run into following a difficult iPhone restore procedure. It smells to me like a mismatched DRM-motivated unique identifier. I’d recommend trying ..

1. Expect to lose all app-related data from your phone.
2. Mount phone, don’t allow sync. (If you hold home button on connection it won’t sync, I always disable auto sync).
3. Go to tab for applications, switch to selective sync, uncheck problem app.
4. Sync. (This will remove problem app from phone – and all data)
5. Go to tag for applications, check the problem ap.
6. Sync. This should fix things. Data will be gone

If that doesn’t next up is to restore the phone from a previous backup.

1. Mount phone, don’t allow sync. (If you hold home button on connection it won’t sync, I always disable auto sync).
2. Right click on phone.
3. Restore from backup. Expect to lose new data. Restore takes a LONG time, you have to resync music, etc, you lose all passwords, some config settings.

Or try this …

iPhone OS 2.0.2: Fix for Apps Crashing, Not Launching and Missing Music - iPhone Atlas

… In other cases, you may need to delete the actual update files, then re-download and restore. Delete the update files, located in ~/Library/iTunes/iPhone Software Updates under Mac OS X or C:/documents and settings/[yourusername]/Application Data/Apple Computer/iTunes/iPhone Software in Windows…