Samsung XE300TZC AKA ATIV TAB 3
This tablet is dead as it doesn't boot or allow to enter bios.
One or two times I was able to make it boot somewhere where I saw the error:
security version mismatch detected. make sure you are updating to a new version of the system firmware or contact your support representative
Error code = 0x10000001
wait 3 seconds to restart
Typical solution found online: Replace the motherboard.
So I'm wondering if a BIOS dump file can be found so I try to flash/reporgram the BIOS
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