flashing through magisk not working with custom ROM and kernel

[PostboxRetinal]

I've working with DoT (droidovertime) custom rom and Neternels kernel (for nethunter support) and tried to flash the zip. It flashed, but, am not being able to find out /system/etc/firmware or 'just finding' the files i just flashed. Neither using find / -iname rtl88

[effek70]

I tried also flashing but it did not open, it's in bootloop. That was in Q, but now when i upgraded to R, i cannot even generate an img file. im new with this rooting & compiling. Thanks for the comment,