Connect your receiver to your computer using a DB9 RS232 cable or a compatible USB-to-Serial converter.
However, for 90% of bricked dashcams, the remains the gold standard. Sunplus Loader Latest Version Download -UPD-
Do not download this tool just because you have a generic Android phone. Sunplus chipsets are not as common as MediaTek or Snapdragon. Connect your receiver to your computer using a