I succeeded very well in my testing of Zeroshell with Huawei E169 and E180. I even had them connected simultaneously and Net balancer worked very very well.
Then I tried Option iCON 225 and 401 with no luck.
I read from other Linux places that the Option modems need hso driver, and could find hso stuff readily in the Zeroshell SW.
Now my question is how to activate the hso driver and then what next to make Option modems work? The newer Option GlobeSurfer 401 is a very promising modem with HSUPA and connector for external antenna, so it would be really good to get it working also on Zeroshell.