Official Meizu Note 9 M923h Stock Rom ((link)) -

A: Yes, but installing a custom ROM may void your warranty and may not provide the same level of stability and security as the official stock ROM.

If your phone is stuck on the logo or won't turn on, you need Fastboot. Official Meizu Note 9 M923H Stock Rom

: Flashing this stock firmware is a standard solution for fixing bootloops , "soft bricks," or persistent battery drain issues caused by corrupted custom ROMs. Performance Review A: Yes, but installing a custom ROM may