Sennheiser EM300 G2 service software

Hello.

I have a EM300 G2 receiver with not working processor (power supply was checked, and radio part was checked in other working receiver). The processor gets the clock, but does not initialize display or anything. I think It was bricked during software update. I want to try to reprogram it through the DATA port (rs485) - the service manual says there is sennheiser software just to do this, but it is not avaible anymore. Is anybody able to give me te software or the .hex file (It says it was on cd sold with receiver).

Thanks