LINE is a chat application.
I recently reinstalled my OS, and restored my LINE chat history using this procedure.
Problem: Some of my chats appear like this:
Unable to display message as it couldn't be decrypted. Please ask your friend to resend the message.
As you can see, my friend re-sending me the message does not solve the problem.
On the messages from July 6 to the day I reinstalled have this problem.
So I disabled Letter Sealing, and now I can read new messages sent to me (but I can still not read the existing problematic messages).
- How to make the problematic messages readable again? I still have the Titanium Backup from the former OS, if necessary.
- Is there a way to re-enable Letter Sealing while making sure that encrypted messages will stay readable even after reinstalling my OS in the future?