Yeah, that’s a rough one. Manufacturers really don’t want us mucking about and will release different versions under the same name all to obfuscate that process.

A lot of TVs are like this as well; we have a curved Samsung 55" that lost it’s backlight last year - not only did I need the model and serial numbers, I also needed the specific T-con board revision. A similar thing happened on my former TCL Roku TV several years before. Same deal.