After days of trial and error, I can conclude that B25 has serious issues with Magisk - Magisk Manager will fc on every root permission prompt, the Magisk app is also not usable. I've raised this issue here as it seems it is producing a code 14 error on opening the database. This problem seems to be B25 or Axon exclusive.
Since B25 stripped bootloader and caused the Magisk to crash, I see no reason to use it and to get Safetynet to work, rolling back to B19 is the next best move.
I will describe my process (which involves a wipe) and successfully get Magisk 13.2 to work and Safetynet all passed without extra modules.
1) Download the B19 EDL (B19-NOUGAT_FULL) and have MiFlash ready
https://forum.xda-developers.com/axon-7/development/edl-emergency-dl-mode-twrp-unlock-t3553514
2) Flash B19 EDL by using
3) Boot to stock recovery by pressing Vol Up+Power, choose a wipe/reset
4) Boot to Bootloader, install TWRP
5) Boot to TWRP and sideload Magisk 13.2
6) Boot to system
7) Enable USB Debugging and run
Magisk should be working and it should pass the SafetyNet check. You now have a clean phone to play with and stay away from B25.
Since B25 stripped bootloader and caused the Magisk to crash, I see no reason to use it and to get Safetynet to work, rolling back to B19 is the next best move.
I will describe my process (which involves a wipe) and successfully get Magisk 13.2 to work and Safetynet all passed without extra modules.
1) Download the B19 EDL (B19-NOUGAT_FULL) and have MiFlash ready
https://forum.xda-developers.com/axon-7/development/edl-emergency-dl-mode-twrp-unlock-t3553514
2) Flash B19 EDL by using
Code:
adb reboot edl4) Boot to Bootloader, install TWRP
Code:
fastboot flash recovery twrp-3.1.1-0-ailsa_ii.img
Code:
adb sideload "magisk v13.2.zip"7) Enable USB Debugging and run
Code:
adb reboot disemmcwp
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