Unlock Ericsson F3507G
When I got my new Lenovo ThinkPad T400, I spent 2 days trying to unlock the F3507G mobile broadband card
After looking around I found that the card is in fact not locked to one specific moblie network, instead the Lenovo software is limited to only connect to a specfic network.
This is very easy to work around see video below showing my unit connecting to T-Moblie (UK).
The video first shows the card not working using the Lenovo software and then it working by simply connecting using windows connection manager.
Video created using CamStudio