Has anyone updated their firmware for the Runcam Split HD to the latest (v1.2.3), and have their unit stop working after it reboots? It was working fine through several bench tests, but once I updated and rebooted, the unit is now stuck in 'standby' mode, and will not respond to button presses, or transmitter controls (Power on/off, change mode) - Anybody have any ideas how I could possibly fix this, while I'm waiting for Runcam support to get back to me?