If the MM731 lost connection after firmware update, please check the following troubleshooting suggestion:
- Unplug and re-plug dongle to the PC, and connect the MM731 under 2.4GHz mode again.
- Repair the MM731 by the steps found here.
- Double check if the MM731 has been updated to the latest version completely.
These steps may resolve the issue, if not, please contact here [email protected] for more help.