did firmware flash just disable Touch ID??

2017, A1707 MBP, non T2, had a FindMy lock on it, and a firmware lock if I tried to boot into recovery

I cleared the firmware lock by flashing a clean bios bin, and then immediately did a pram reset and booted from an external drive and installed Catalina. all good except Touch ID doesn't work, but when I say doesn't work, it prompts me to set it up, but when I touch my finger on it there's no response.

anyone ever seen firmware flashing affect Touch ID? there's no way to know unfortunately if Touch ID worked before, but by all indications this logic board and presumably power button are original to this machine
 
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