This usually means the software is not signed for your specific brand. You may need to use a GX6605S Loader tool via a PC and an RS232 cable to force the installation.
Look for community-tested files on niche satellite forums or tech groups. A popular source for GX6605S firmware is the GX6605S-Firmware Community , which frequently shares direct download links for various board revisions. USB Installation: Format a USB drive to FAT32 . Copy the .bin firmware file to the root directory. gx6605s s18069 software best
With your device's version numbers, you can start the search. The most reliable sources for software are specialized forums and download sites for satellite equipment. This usually means the software is not signed