Name: Sierra Wireless HSPA Modem Driver
Author: Sierra Wireless

Question 1

Installer fails or rolls back?

Accepted Answer

Run the Sierra Wireless package as administrator and confirm it matches your Windows version and architecture. Older HSPA packages may require temporarily disabling driver signature enforcement; use a signed vendor release where possible.

Question 2

Modem not detected?

Accepted Answer

Reseat the USB/ExpressCard modem, try another powered USB port, and check Device Manager for unknown Sierra modem or COM ports. Install Sierra Wireless Watcher/Connection Manager first if the package requires it.

Question 3

Driver/version conflicts?

Accepted Answer

Uninstall any existing Sierra Wireless driver and Watcher/Connection Manager, remove the modem, reboot, then install one matching package. Avoid mixing Windows’ generic mobile broadband driver with the Sierra vendor driver.