Usertrojan did you buy a compressor that has the red decal on top warning about software update?
That is the newest compressor and what you want to install.
It needs the software updated or it will damage the compressor.
This discussion got a bit confused because some of the other posts they have the older LG design with 2 separate boards, one main logic board and one compressor inverter board.
If you have the fridge with one large board on the back with large capacitors near the bottom then you must update those large boards when you install the newest version compressor that has the red decal on top.
Look up your model on the parts search link at top of the page for appliancepartspros.com and it should give you the newest main board part number. Or check other parts sites like searspartsdirect, encompass, repairclinic, etc to confirm that all show same part number for the main board.