It is recommended to backup your channel list before performing a factory reset or a major software update.
Use a tool like WinRAR or 7-Zip to extract the contents. You should see a file with a .bin extension. Download iSTAR A8500 rar
Format a USB flash drive to FAT32 . Copy the extracted .bin file onto the root directory of the drive. Update the Receiver: Plug the USB drive into your iSTAR A8500 Navigate to Menu > Setting > Upgrade > USB Upgrade . Select the file and confirm to start the update. Caution: Do not turn off the power during this process. Important Notes It is recommended to backup your channel list