It's should to help... Maybe you put backup folder in the wrong place.. I don't know.. When you transferred backup folder to your phone, do you asked about override ? I ask this because you told me that you did backup (tweak K), You need to override your backup folder with my one...

ZIP file from the first post is not empty, it's include backup folder...

Ok, do something else:
Open terminal and write:
rm -f /home/user/.mms/profile.conf

And tell me what you get.. And check you conversation app..