Volfgang 2 @ 12/04/19, 0:41
No, you can not update the air to roll
Well, why not? If during operation does not make changes to the system partition, then only a sufficiently before OTA by rolling back to the place of stock recovery and boot.
After the upgrade again to patch bottles and enjoy more.
Incidentally, the 8 only checks tselesnost system and 9 already boot was checked (about rekaveri not vkurse not use custom). So, if it is not native, the update fails (writes: Could not update the system or something similar), but no butlupa brick or not.
This is all from personal experience, so use at your own risk.