How flash Razer Blade BIOS ?

Hi !
I have copy of old bios 1.02 taken from AFUWINx64.exe is 12MB file and i can’t use it because Razor bios is locked to downgrade.
I have new BIOS 1.06 and I dump it with ch341a programer - is 16MB file.
My question is simple - how use my copy to flashing oldest BIOS with ch341a programer ?
I think I must extract 4MB from dump and split it with copy but I can’t find any tutorial on it.
Any help will be well seen :slight_smile: