Talk about Flyme 184.108.40.206 beta for the m3s!
Flyme OS 220.127.116.11 beta (m3s)
Setting -> Finger and Security -> Root permission
Like every other Flyme 5.1 firmware
@Jollibar-AKO, go to Settings => Storage & backup => Data backup & restore => Backup Now
Then download Flyme 5 update.zip and update with 'Clear Data' option.
After that, you need to restore your backup via Settings => About phone => Storage => Backup data of phone
Choose your last backup and restore it.