got a good deal on ebay for a W510 from the manufacturer.
I did a full backup from FB3 with the same profile, am about to try some skins on this with mma_ucp..

Am not sure if its unlocked, and if it is will it go after I flash it?

I am also facing a issue.. when I pair my bluetooth headset I hear a very loud tone/beep for 5 seconds after every action on the phone.

Firmware: R452G_G_08.13.09R
Flex: GSTPEMBACENTENA0C4