I tried doing so. I have installed a backup, but stil my calendar wont open :17:
Have you done a one by one comparison of the backup with the things on your berry (advanced options), sometimes it's better to just push the missing piece on the berry instead of a full restore.
If nothing helps, I fear, you have to go for a wipe and an OS re-install
btw did you do a battery pull/restart after the backup?
After another backup and battery pull it worked Thx for help people !
Welcome, that's what we are here for :-)
Are you still showing the original problem?
No so far Tested by syncing 1 appointment and it went fine. In case it returns ill let u guys know