: Never flash firmware from a different model (like the A620 or A650) unless a "conversion" guide explicitly says it's compatible.

Downloading an original dump or firmware for the is a common task for users looking to recover a "bricked" satellite receiver or update its system software. A "dump" is essentially a complete backup of the device's flash memory, including the bootloader, firmware, and user settings. 📥 Download Sources

Are you trying to (stuck on BOOT) or just updating features ? Do you have an RS232 cable available for recovery?