Roadnet Telematics LMU 3640 Release Notes

The 2021.R1 firmware release for the Roadnet Telematics 3640 device has several enhancements.

Added support for higher ignition voltage detection in 24v vehicles
Added a battery management feature to help extend the battery's lifecycle
Added a low voltage check and deep sleep mode to help preserve vehicle battery charge
Added automatic DTC message after the ignition has been on for 5 minutes
Added support for Cat M with supported devices
Added current consumption limit during extreme temperatures to prevent internal battery damage
Changed sleeping device heartbeat wakeup interval to 8 hours
Changed engine crank detection logic to better detect ignition on
Fixed panic button and PTO input mapping
Fixed an issue that caused the scheduled event message to sporadically fire outside of the schedule
Fixed accumulator versioning across all script variants
Fixed edge case cellular issues with upcoming AT&T 3G sunset
Fixed excessive VBUS queries when the device is installed/wakes up while the engine is off
Fixed excessive CAN bus errors that could lead to the device disabling the vehicle for safety reasons