I've been struggling with my K95 RGP Platinum (non XT) for over 2 years - been running it in BIOS Mode since I got it since it freezes constantly no matter what else I do.
Tonight, I came across this post and had a '***** it' moment - decided to flash the XT Firmware from this thread on my non-XT (expecting to brick it and move on), but it actually flashed successfully, and my device now shows up as an XT and no longer freezes.
Completely blown away. I opened a ticket with Corsair, and i'm curious what Corsair has to say about this.