MSI B550M Mortar firmware for EC chip 25X20CL
Hello, so I have this motherboard that was power cycled during bios update and it never boots up. I tried flashing bios from USB stick. Process completes but does not help. I also tried desoldering bios chip and programming it with CH341 to first and latest versions. No joy. So the board is just stuck on CPU led and does not move any further, i checked that we have vcore, vcc on bios chip and rest important voltages, however I noticed that it does not power off when holding power button for 4 sec. So it leads me to believe something is wrong with EC which is Nuvoton NCT6687D-R. It actually has a small flash chip nearby so I was thinking maybe it is worth a try. However I don't have same board to read it, also I tried unpacking bios dump and looking for suitable size for this flash (the same theory as with asus tpu/rog binaries inside) but could not find anything that match.
Does anyone has same board lying around to read the dump or help unpacking its contents from bios flash?
Any help is appreciated. Thanks.
Attaching some photos for clarity.
Does anyone has same board lying around to read the dump or help unpacking its contents from bios flash?
Any help is appreciated. Thanks.
Attaching some photos for clarity.
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