I sure do need some help, this week old laptop is currently about as useful to me as a paperweight.
I had the prior model of the same laptop (exact same specs apart from RTX20xx series GPU instead of RTX30xx and a bigger HDD), and the previous machine worked fine in Linux (my primary OS)... but when I boot this newer model machine into Linux the laptop gets stuck in the lowest idle power (running @ 0.9V/~300-500mhz). Metabox support weren't much help, I was able to video the performance issues and get them to replace the machine with a brand new one, but- the exact same issue is present. There are numerous forum posts about this issue with the 3900x getting stuck in low power mode, and all signs point to c-state issues, so the only thing I can think to try now is disabling C-states in the BIOS (adding the kernel flags to linux made no difference), but of course all the options are hidden.
And so began my journey into the painful world of laptops with InsydeH2O bioses...
I downloaded H2OUVE but whenever I try to use "Load runtime" it fails with an error. After some blundering around I managed to dump the BIOS image to a file using the H2OFFT tools, and was then able to load that file into H2OUVE using "Load image". All the options I could see matched those in my BIOS so I assume the dump was successful. I could see the option to enable advanced setup, so I set it to enabled, saved it out to a new image file. And I was able to use the CLI tool to applying the file (after adding the -forceit flag to ignore checks), but after the reboot when it goes into the BIOS updater I just get a blue text-based window saying the image is invalid, then it reboots again unchanged.
From what I gather the updated image needs to be signed for the flash utility to accept it, I found conflicting reports saying it needs to be signed with some QA.pfx certificate- some seem to suggest u just create a new certificate on the CLI and sign it. So I'm at a loss to know where to take it from here.
So as of this moment I've gone through two brand new laptops with 12 cores/64 GB ram and 30xx series GPUs that take about 5-10 seconds to open a terminal window, about a minute to open slack, struggle to switch between tabs in chrome, run the Superposition benchmark at frame rates of 21FPS on a current generation GPU, and in CPU benchmarks performs somewhere between a Celeron and a Core2 Duo

Any and all advice on getting this BIOS unlocked will be gratefully accepted!