Flashing patched boot.img fails with (bootloader) Preflash validation failed

[wismos-0rg]

so as the title says, flashing from fastboot fails with (bootloader) Preflash validation failed
but a different way of patching works for some reason, that is installing the latest 7 months old stable 27.0 build, patching and flashing boot.img with that build, updating the app to latest canary, do a direct install from magisk installation methods and the boot.img will be patched and flashed fine, i haven't uploaded recovery logs since i used fastboot but i have uploaded the patched boot.img that returns the error: https://file.io/EGEkNhXlsQJo

Device:Moto E7 Plus
Android version:14
Magisk version name:27.0
Magisk version code:27007

[christiandavid82]

I experienced the same problem with a Motorola Edge 30 ultra (Android 14 Stock ROM, Firmware XT2241-2_EQS_RETEU_14_U1SQS34.52-21-1-13) Magisk 28 generated a corrupted boot file, but Magisk 27 worked as expected.

original boot.img Extracted from the above ROM
magisk_patched-27000_UBPvy.zip Fastboot: Works
magisk_patched-28000_KQF2T.zip Fastboot:(bootloader) Preflash validation failed

After installing via fastboot a boot.img generated with Magisk 27 i updated in the app to Magisk 28 and from there updated and everything works.

[canyie]

I'm reopening this as requested by another dev

[mirh]

FWIW I can report the same issue on the original Motorola Edge (racer) too.