Connectivity can be strained if the firmware versions of the M2s and Bees are not the same. If there are any mismatches, you have to do the following:

  1. Downgrade the M2 to Bee’s version by performing an offline upgrade (please refer here for further offline upgrade instructions)
  2. Perform an online upgrade for your Bees only to the latest firmware version
  3. Upgrade your M2 back to the latest version.

Please Note: The order of upgrading firmware is important - if the M2 gets upgraded before the Bees, you may experience connectivity issues.