I suppose you could, but from what I can tell it's not gonna be the best for your memory, and 1309 is right now. I expect another update relatively soon, perhaps. At least, I hope so! It's no problem to flash back, just use USBFlashBack, name the older BIOS properly, and it works fine. But maybe it fixes Turbo for you... Yes, you can choose which chip it boots from, other ROM should not be flashed.