You could try put the bios update files on the root of a SD card, and ssd And USB stick or both. And boot up.
I have read cases of people reviving laptops with dead bios that way.
Sometimes a bios won’t load if there is anything broken. Like a defective SSD. Disconecting it or Replacing it could revive it and let you boot from USB stick or external disk.
Perhaps the bios thinks the SSD is defective and shuts down , perhaps the hibernation messed up the SSD with big files all over the bootloader and the bios doesn’t like it.. It wouldn’t be the first time hibernation completely smashed my GRUB . But of course normal computers will still be able to enter bios even there are no disks plugged. But with these little laptops made by China might not be the same
Once I changed the firmware of a router following a manual, making a JTAG device out of an old phone charger with a RS-232. And connecting those cables.to the motherboard of the router , and opening a telnet to COM1 where the Rs232 was plugged. It was awesome. I followed the friendly manual step by step and felt like a hacker.
Maybe you can do something like that.
