Please, help me repair Nord Stage

My key Nord Stage 1 and the other one - Nord Electro 5d stopped working!

I gave it for repair to a Key Board Service, in my city - Chisinau, where they found that the problem of both keys is in the Binary Files (or Rom File)

Nord Stage 1. and Nord Electro 5d.

Please, help me to find Binary Files (or Rom File) for Nord Stage 1, and for Nord Electro 5d.

Thank you very much for your time, and I hope you can help me to find these Binary Files.

Best regards from Moldova, Chisinau.p

See here;