*#66*# Set Factory Mode *#8375# Show Software Version *#1234# A2DP PTS Mode (Bluetooth output) *#1234# A2DP Normal Mode (Bluetooth output) *#3646633# Engineer mode *#33778# Serial no. *#900# BT power on (Bluetooth output) default user code: 1122, 3344, 1234, 5678 Engineer mode: *#110*01# Factory mode: *#987# Enable COM port: *#110*01# -> Device -> Set UART -> […]