: Plug the device into a USB power port and connect the 3.5mm audio cable to the TRANSMIT port of your source (TV/PC).
For developers only – solder UART pins to a TTL adapter and capture boot logs. This reveals exactly where the firmware crashes. yettr6 user guide fix
When software tweaks fail, a factory reset is the nuclear option. Navigate to . Select Factory Reset . : Plug the device into a USB power port and connect the 3