i dont know what my receiver is but i have the serial number

[wahed]

i have echolink and the cover has been removed

my brother programmed the receiver with star sat firmware
it now work but there is a lot of bass in sound
my ears hurt

i want to upgrade it to echolink

serial number:
EL7770806009461

another thing with echolink if i upgrade to worng firmware can it be restored?