hi,
The cell auto failover should be in the firmware version you have - Admin -> Radio Module Firmware -> expand options -> Network operation switching set to Enable. (may have to reboot).
I’ve just installed the new firmware version 4.8.0.021 for the RV50:
source.sierrawireless.com/resou … ware-list/
Also, you may have to install the appropriate radio firmware, eg: ATT, Verizon etc…
Hope that helps,
Jay.