My bad, forgot to tell you that this is .CAP, worked on it in a sleepy state lol.
In my experience, in modding .CAP bios (notebook), you need to use files in the IC BIOS, not from the web (i could be wrong though).
I can’t talk much about how to flash bios on PC but as far as I know if the system uses INTEL you can also use FIT or FPT I don’t recommend it only for advanced users.
for AMD AMI users notebook especially .CAP theres no way you can flash bios without programmer (ch341a / i could be wrong too here), and for AMD/INTEL insydeh20 you can use H20FFT (intel notebook also can use FPT) and get rid of “Flash Protection Range Registers” with RU.
i tried to update with the file you provided but the update tool expects a CAP file where the one you send is a ROM one.
should be fine following the .cap section guide