And this is one more reason I will only buy a laptop from System76, Framework, or Tuxedo to run Linux.
All motherboard manufacturers irrespective of OEM should provider a firmware mode that can be boot to, allowing BIOS upgrades. But since they don’t seem to, especially with laptops, seems best to stick with known vendors whose primary OS they support is Linux.
Good luck, OP. Hope the live Windows USB thing works. Just be careful to not get infected with Recall or any other Microsoft nonsense :)
Razer was the worst. It had to be done thru a ‘legitimate’ copy of the latest full Microsoft Windows (no old Windows, Windows PE, FreeDOS, etc.) & the purpose was to give you a black+green GUI experience. After I emailed them about this several years ago when I had a Razer laptop, they put up a sign on the support page now saying installing Linux voids both you warranty & any support tickets.
Funny is that they did a big push for a hot minute to be the next developer-friendly laptop goto as they had a lot of power & æsthetics that were slim & looked alright in an office compared to everything else at the time where gaming laptops needed RGB & a hood scoop while non-gaming laptop suffered massively in performance. I picked one up around that announcement, but a few years & they completetly doubled back.