Hi
i Just burn your BigSur .raw.bz premade file to my USB by Rufus and it boot it up but after second will fail ( i know is because i have to replace my EFI OC config).
problem is here: i can not edit EFI folder in Usb and replace my OpenCore. it's read only in Usb. would you guide me?
Note: I used WIN10 nor MAC neither LINUX to burn Usb .