1.boot into
system
2.
Activate Developer settings
3. search
and turn off automatic system update
4. Go to
time settings and deactivate automatic time
5. Turn
back the day for more than 7 days.
6. Search for Software update
Don't install update
8. Reboot
your device
9. go into
the time settings and reactivate the automatic time
10. Search
again for software update Still don't install
11. Go
to Developer settings
12.
deactivate OEM Unlock and reactivate
13. Go to
download mode and you will don't see RMM state anymore
14. Flash your
preferred Rom.