Firmware upgrade to 4.6-R16 on cnPilot R200

Attempted firmware upgrade today to 4.6-R16 and I have lost internet with "Device has been upgraded to new firmware.  Device is Rebooting Now, Please Wait... ..." message on screen.  Bars are also constantly moving indicating that the reboot never ends.

Has anyone experienced this and how to solve?

Could you let us know from which version you are upgrading from and open a support ticket with us