LeGo2: Bios update doesn't actually install

Hi and thanks for taking your time to help,

I own a Legion Go 2 Z2E 32GB version, and Legion Space always marks RRCN15WW bios as available for installation. My current bios version is RRCN12WW.

I press download, then I press install, it does its thing and after rebooting it just... prompts me to download and install it again?

So how do I actually install the bios update? Instead of rebooting via Windows, I tried to shutdown via Windows and then press power button, but with no luck. It just stays an older version.