It seems like your GDFS is bricked.
Flash the GDFS backup of your phone, if you have one. Do not flash any other GDFS, it'll kill your phone for good.
You can try to take out the battery for about 2weeks, it may work then.
I had an V630 (which is the same hardware as K610) with the same problem and it was working again after two weeks without battery. But don't flash it again then, it'll be bricked again.