Not on a x51v but I friend has a Tytn (jasjam) with WM5 on it. He constantly had trouble with the blue tooth stack crashing on it. When he had it around to me for a keyboard repair I asked him if he wanted WM6 on it and he said yes please. I grabbed what looked like a good cooked rom at xdadev and loaded it on for him. Got a phone call from him a few days later saying the BT stuck is great. Not one problem since.
I am sure there are other bug fixes in WM6 not found in WM5 so go for it.
Bookmarks