www.makemkv.com

Tool worked. Funny enough, LibreDrive didn't detect the crossflash as a firmware modification, but it does read 4k discs now.

New drive info dump:

Drive Information
OS device name: E:
Current profile: BD-ROM
Manufacturer: PIONEER
Product: BD-RW BDR-XD08U
Revision: 1.01
Serial number ...

So I purchased a Pioneer BDR-XD08B by mistake as the seller had listed it as a BDR-XD08UMB-S (the power was on and a 4k Bluray disc was visibly in the drive bay so I ignored the sticker showing the SKU)

I'm wondering if this can be crossflashed to play back/rip 4k discs.

Drive info:

Drive ...