On a newly bought Minibook X I have newer dated bios with an older (!) version. It’s DNN20A V2.03 from 12/28/2023
The “A” means a bit different board revision, I suppose. Everything same as previous model, same 50 Hz screen (can be overclocked to 60/90 hz), but the RAM is slower now.
For previous model, people posted CPU-Z showing RAM at 2400 (2394 if exactly) frequency with 52-44-44-108 timings, but mine got RAM at 2000 (1995 if exactly) frequency (effective 4000) with 48-36-36-84 timings. Go figure!