tl-d3 pro z2 only goes 'down'

\*now fixed.. see comment below\*

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I was replacing e2 and unplugged the comm cable and plugged it back in while powered... i know i screwed up. smelled something electrical. ever since the z2 (right z motor) only ever goes down. I replaced and tested motor its fine.

I read online that i likely burned out a stepper driver. not being able to see anything physically wrong i replaced all 7. the issue remains.

do i need to flash firmware again? I pinged the support emails 3 days ago per the website to ask for the latest firmware and the above question but haven't heard a peep back. does anyone have one or do i need to complile it from the github?

unsure if this will even help. i'm betting i blew something on the mainboard. weird how messing with e2 could break something in z2.

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any advice/firmwares (.hex) i can get to reflash, etc?