You can find the specific DUMP for this hardware version on specialized satellite support forums. Note that these often require a free account to download: (Search on Sat-DZ)
Because this file is used when the device is "bricked," you generally cannot use the USB menu. You have two main options:
Connect the receiver to a PC using a Jack-to-RS232 cable and use the "GX6605S Loader" or "Console Downloader" tool.
(For standard firmware updates) How to Flash the DUMP
Typically 4MB or 8MB depending on the specific chip revision. Download Links
Are you trying to fix a , or do you just need the latest channel list update?
Ensure your motherboard matches the 2Q32CS GS3901FD silk-screen print exactly. Flashing the wrong dump can permanently damage the hardware or lose your unique SDS/IKS serial numbers.