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Redeploy firmware to version mismatched IC

Hello people

I got a MCU1 from a 2017 Model S 75 running on the bench with v8.1 (2018). I have a IC hooked to it that seems to run a wayyy higher version than the MCU because the MCU shows a icVersionMismatch error when in Dev Mode and it also shows a error about "Software Update required". The cluster was originally from a white 2016 Model S 70 but after it being connected it changed to a black Model S 75 like the MCU was .

Now I wanted to actually make them match. Is there a way I can issue a factory redeploy to just the MCU and IC on the bench? I can't get to "start" the "car" anyway because of the version mismatch. Atm not even the color matches since I changed it to red via ethernet but the cluster stays on black. It doesn't even boot by itself, have to manually send the CAN message