Samsung Galaxy A15 install bootloop

[David-Mawer]

Hi there,

I've got a Samsung Galaxy A15 - rooted with Magisk.

I tried the APATCH install process documented here: - https://apatch.dev/install.html

When I entered the SuperKey - I've attached a screenshot of what the app discovered about my kernel.

Then - i copied the patched image to my machine, renamed it to boot.img, and flashed it with ODIN the same way that I flashed the Magisk image.

When I rebooted, the phone showed the first warning screen (with the click to continue)
Then it showed the Galaxy screen (with the warning at the top part of the screen)
Then - instead of showing the "Android" logo - it reboots.
(the reboot happens all the time - I have to use the hardware buttons to force it back to stock bootloader, and then re-flash the Magisk boot image.)

could anyone help me please?