Thank you for clarifying! I did as you posted, used /m instead of /u (I could have read that on your homepage, at the very top in EDL
) I grabbed a boot image using /pboot_b, my device is slot b:
edl /m /w /pboot_b bootb_patched.img
Found EDL 9008, configuring... ok
Requesting info on LUN 0... ok
Requesting GPT 0 header... ok, receiving... ok, requesting entries... ok, receiving... ok
Requesting write bootb_patched.img... ok, writing 100% ok
It seems to have worked, i rebooted my page and opened magisk:
Installed 28.0 (28000)