Hello!

I have set up a KX-TA624 phone system in my home. I also hung a KX-TVS50 voicemail system next to the KSU 5 years ago. However, it wasn't until now that I have decided to interconnect the two. I have since discovered that the KSU's firmware is too old to work with the VMS. My current version is: Y501Y 990325(M). I have scoured the Internet looking for the EPROM, but to no avail. Does anyone know where I can get a more current version and how much it might cost? It doesn't even have to be the latest version, just something high enough to allow me to connect the voicemail.

I'd appreciate any information you can provide.

Regards,
Brian