I downloaded the latest posted 211 and its identical in size and compile date. Dont know of anything past that as BIOS altering is not my bag. I did install it, has to use the cmd prompt with nodate switch to get it to accept. After had to go back in a reset Raid 0 to active and its working exactly the same. I dont have any fan issues. No tools seem to be able to monitor both fans and even notebook fan control has them backwards.
I ran multiple high intensity apps that use the CPU and GPU and noted no anomalies in Fan operation or temperatures in CPUZ HW monitor min max values. Im compiling a 26GB video right now and no issues noted. Not to say there are none with others, may be a combination of the BIOS and another application causing cross talk on the SMBUS. Im kind of expecting another BIOS release soon if it follows suit as it has been. The VT being released first got updates first. Right after the VT BIOS was updated for the Raid enable/disable aka AHCI/RAID the VY update to 211 was a few weeks behind. Im not having any major issues, I know some are a bit discontent with the fast boot enable not latching and having to wait an extra 10 seconds but it doenst bother me in the least. I would like to see better speeds with the Raid 0. I'm getting better than a single drive but not as much as I expected. The biggest jump was in write speeds.
AHCI was always active. You can go back the same way you got to the AHCI in the first place but I see no advantage in that. Its a bit confusing because folks go off of the Samsung Magicians inability to see past a raid controller which is common with any motherboard. There are no advantages with the Samsung drivers for AHCI or NVMe. I think we have proven that several times over.
For the original quesiton there is no raid 0 in BIOS 208.
“Two things are infinite: the universe and human stupidity, I'm not sure about the former” ~ Albert Einstein