I bought this device a month ago and it worked perfectly until two days ago.  I have not been paying attention to software update so I don't know what version it was on.  Mine would disconnect about every hour or so and I would have to power down and restart to connect.  I convinced Verizon to send me a new one and I just connected it about two hours ago.  It is on software version 204453.  It has been working but time will tell.  I will keep you posted.