RM502Q-AE "factory test"

I’ve tried dozens of QMI, MBIM, and AT commands, and have had no luck. My RM502Q-AE says it’s in “factory_test” mode
uqmi -d /dev/cdc-wdm0 --get-device-operating-mode
“factory_test”

Even after flashing firmware, still in “factory_test” mode.

Any help?
TIA