If you are also here, TL;DR: DO NOT SHUT DOWN LAPTOP. Leave it a is for a few hours and go touch some grass, to the gym whatever, just to prepare for the worst and provide time for any possible updates under black screen done.
Okay, so my story:
I have dual-boot with Ubuntu 22.04.3 and Windows 11. BIOS version is JFP30.03.03 (3.03)
1.1. Firstly, I get firmware updates in the Ubuntu software center, which should be updated BIOS from 3.03 to 3.05 during reboot.
1.2. I clicked “Update”, laptop rebooted, BIOS NOT updated, but this update has gone.
1.3. I double-checked my BIOS - it was still 3.03.
2.1. So I switched to Windows 11 and used .exe installer
2.2. After laptop rebooted I got a black screen which not respond to anything. Leave the laptop as is enabled.
2.3. I set a timer for 4 hours, just to be sure that I 100% will not corrupt any possible BIOS update by premature hard-reboot.
2.4. Found this topic and a few related topics, and after reading a few “FW Support sent me a new motherboard” my hair started slowly turning gray (as thats does not sound as “sustainable” and “repairable”)
2.5. After 4 hours awaiting I finally hard-reboot my laptop.
Laptop right before, during and right after reboot video: https://github.com/MaxymVlasov/maxymvlasov/assets/11096782/77020230-582a-4b89-b480-66091e101992
2.6. After hard-reboot it shows me next error:
Update Failed!!!
EFI ERROR CODE: 02
Decompress failed!!!
and then successfully booted to OS.
3.1. BIOS is still 3.03, and the Ubuntu software center now has the same firmware update which previously ended without any effect.
3.2. For now I’m done with BIOS updates at least till 3.05.1/3.06 release or till I find anything that will require such updates.