your data must be there. I am with it and no problems at this time.
I know a bug with Redwolf's recovery. It can't reboot in itself if there is no system partition on the phone.
For others OTA will not work. There is a custom recovery for OREO:
https://drive.google.com/open?id=1kYKItOkP6H6XVER7iAE22ujSisigZbJ2
credits to: Alex-Gibson from 4pda (https://4pda.ru/forum/index.php?showtopic=878628&view=findpost&p=74520499)
you must be a beta tester?
I just gave the links if they are useful for the eu rom.
But i think that eu rom wil be available when public beta is released
sorry. I didn't know that.
I am not using the phone for videos and from my... small experience with that i had no problems.
I hope that you will have EIS