ejjeffay W600i will have problems with both XS++ and FAR..ulimited problems dude.. i got a W550i so i guess everything is the same(apart from the fact that you got EDGE)..
Use Setool2 Lite..not FAR or XS++.. neither works..
Anyway ,just in case , the whole thing being stuck at Activating File sytem migh mean the FS file you are using is corrupt. So id recommend getting a new FS and corresponding cust pack files and reflashing using ONLY Setool.
Infact there are video tuts of setool.net if you have problems!
Cheers dude!