In that time I've seen a loot of posts with asking for link to wm6.1 for Jaq3, so I will post it here. I don't really know, but I think it is english wersion, beacuse guy who was posting it wrote on chinese forum something like this:
"i-mate jaq3+ 英文ROM". I wish that it is working
You have to copy 2 files from .rar on your microSD card, turn off the phone (pull out battery ;P) and push those buttons: FN+ON.
I haven't tested it yet~~!