What's your phone model?Thanks for this guide.
I have a problem unlocking the bootloader. Although I toggle the option "unlock bootloader" to on, the screen in download mode still shows "oem lock: on(1). When I reboot to normal, the option to unlock bottloader is still toggled on.
What can I do to make it work?
Thanks for any insight;-)
Read the instructions again and carefully follow each and every step! You shouldn't have any "unlock bootloader" screen per say, it's rather an option which is only shown once if your bootloader is still locked AND the bootloader is unlockable - providing you correctly followed all previous steps.
Most likely you didn't properly created the tar file. You shouldn't need to delete any .md5 extention. The original boot file extracted from the AP should be called "boot.img.lz4". This is the file that you need to extract and patch through Magisk. How you call it after Magisk patches it, doesn't matter. Follow the instructions on the first page to the letter and do not improvize!!! There is a reason for such deteiled instructions - to be followed!!!