In normal case, your iPhone should work properly after jailbreak. However, in some rare cases, you may encounter some unexpected problems. Other than the YouTube issue after blackra1n jailbreak, here is another problem reported by one of the readers:
“I get to fix the youTube problem. but the Notes app is not working. Everytime I write a new note and click done, the app closes without saving my note. Is there a patch to fix this?”
Yes, there is a fix for that.
If you experience this problem after jailbreak, the database of the Notes application is probably crashed or corrupted. To repair the Notes database, follow the below procedures to fix it:
1. Go to Cydia and install “MobileTerminal”
2. After installation, go back to iPhone home screen and launch “Terminal” app.
3. In the Terminal, key in “cd /private/var/mobile/Library/Notes” and hit “Return”. Then type in “rm notes.db” and hit “Return” to delete the corrupted database.
4. Click Home button to go back to home screen and restart your iPhone (i.e. Power it off and Turn it on again)
After reboot, iPhone will automatically generate a new database file (i.e. notes.db) for the Notes app. Now, launch the Notes app again and write a new note. This time, you should be able to save your note.