Great this is working at least :) maybe should be written in op :D signal issue might be caused by the baseband try a kk or jb one :D and did you try getting download mode when connecting to your computer? Push the volume button up and plug it in;...
well i had the exact same problem u have.. you can look at my previous posts..
i dont know why but it worked for me with vmware.. and in ur situation it worth a shoot.
one of the Initial Symptoms are qhsusb.. try it and let me know..
try this one http://forum.xda-developers.com/showthread.php?t=2681089