Here are some links:

QMI drivers:
https://source.sierrawireless.com/resources/airprime/software/airprime-mc-series-windows-drivers-qmi-build-4431/

QMI to DIP switch tool:
http://www.e-lins.com/EN/download/driver/BZ31018_DIP_QMI_ModeSwitch.zip

DIP firmware:
http://source.sierrawireless.com/resources/airprime/software/mc7700-att-approved-firmware-swi9200x_03,-d-,05,-d-,20,-d-,03_dip/

DIP drivers 3795
http://www.sierrawireless.com/developer-zone/resources/airprime/software/airprime-mc-series-windows-drivers-dip-build-3795/

DIP watcher 3830 (for if you want to use it in windows to see if your SIM works):
http://www.sierrawireless.com/developer-zone/resources/airprime/development_kits/airprime-mc-series-connection-manager-dip-build-3830/