Well here is the thing, i have a jailbroken iphone 3g, with appsync installed for my cracked apps to be synced with itunes, all of these cracked apps work great, but when it comes to my free itunes apps installed, they all crash..all of them, facebook, lose it, ebay, paypal, they all launch for a mere second and then crash and back to springboard. Been trying to finda fix with no luch. Here are my iphone details so we can find a solution more easily.
*jailbroken with redsnow
*3.0 firmware *iphone 3g 8gb
*appsync installed
*cydia and icy installed with no crash problems
*installous installed
*five column sprinboard and five icon dock apps installed
*sbs settings installed
dont know what else you may need but if theres something let me know, i really need to fix this.
oh well..i clearly specified i was running 3.0 on my original post...that is why i thought he meant the os on my pc....anyways i just installed facebook from installouos and it did work, still not working for the other downloaded apps from the app store....
I had the exact same issue on 3.1.2, and I solved it. You need to create a new account, install a free app, and then sign back into the old account, and reinstall apps.
The Fix (step by step):
1. go to Settings/Store and choose "sign out"
2. create a new account (go through the whole process with cc number and all)
3. Use app store to install a free app.
4. Now try if you apps work, if one works, then all should work.
5. Now sign out of the new account and sign back into you old account.
6. Reinstall all apps (or just the ones that doesn't work)
I tried other things like,reauthorizing, syncing, restarting, but nothing works until this.