Read and save the existing (original) dump first as a backup. Erase the chip and write the new high-quality dump file.
If the receiver is functional, you can update via USB by placing the .bin firmware file on a drive and using the system menu. gx6605s s18069 v1 dump file high quality
Click "Start" and then power on the receiver to begin the transfer. Where to Find High-Quality Dump Files Read and save the existing (original) dump first as a backup