By default, the GOBI 3000 driver installs the Verizon carrier firmware.
Thinkpad L420, L421, L520, T420, T420i, T420s, T420si, T520, T520i, W520, X1, X220, X220i, X220 Tablet, X220i Tablet
The LenovoQMISetup.exe for the GOBI 3000 driver allows setting the firmware when the driver is installed by using the option DEFAULTIMAGE=<image number>.
The image numbers are:
0 Vodafone Image
1 Verizon Image
2 AT&T Image
3 Sprint Image
4 T-Mobile Image
6 Generic UMTS Image
7 Telefonica Image
8 Telecom Italia Image
9 Orange Image
So to install the driver with the default UMTS firmware would be;
The GOBI 300 driver LenovoQMISetup.exe uses the settings in Configuration.ini by default. Setting a parameter as part of running LenovoQMISetup.exe will override those values.
C:\Drivers\WWANSR\LenovoQMISetup.exe SILENT=1 DEFAULTIMAGE=6
will silently install the driver using the UMTS generic image rather than the Verizon image.
It is possible also to change the setting in the Configuration.ini file as well.
For most options, a value of 1 enables the feature and 0 disables it. For example; changing the setting SILENT=1 will by default have LenovoQMISetup.exe run silently every time, and changing the DEFAULTIMAGE setting will change the default image loaded when the driver is installed.