[Skunkworks] Wireless device does not exist?

Salut, I am unable to get a solution from the Internet. I wish to invite you to help. *Problem*: E220 Wireless 3G modem, from Safaricom does not connect. It asks for a PIN, and every time this is submitted, it disconnects immediately, asking for the PIN. The Error message I get after the modem is detected is "Wireless device does not exist or unavailable" *Analysis*: Following some investigation, it appears that the same modem works on another laptop. I have even upgraded the firmware. and still the same errors. I feel that I have exhausted all the little skills I have in fixing this problem. Please advise. Tuma Barua.