sms.db format

Everyone,

Due to iMessage giving me grief activating for some reason for me I decided to revert back to iOS 5.1.1.
And it looks like the sms.db may of changed format in iOS 6 as i couldn't use the one from a backup from iOS 6 in iOS 5.1.1.
Everytime i tried it my iPhone seemed to blow it away and created empty one. Yet any backup of sms.db i had from iOS 5 backups worked.

So I think apple may of changed the format of the db file. I may be wrong but that is what it looks like.

If anyone else has successfully reverted back to iOS 5 and copied back there sms.db please let me know.

Have a great day all,
Mike