Copy the .bin file directly to the root directory of your USB drive (do not put it in a folder). Flash the Firmware: Insert the USB into the receiver. Go to Menu > Setting > Upgrade > USB Upgrade . Select the .bin file and press OK.
Use a USB flash drive formatted to FAT32 . Download DISCOVERY 555HD 1506t V11 27092021 rar
Once the progress reaches 100%, the receiver will automatically restart. Do not turn off the power during this process, as it can "brick" the device. Where to Download Copy the