JP1 Remotes

Hi

I try to upgrade my URC-7780 with a JP1.2 cable. I use the IR Version 7

I can delete everything on the remote and upload the saved file to the remote. Everything works fine. If I try to add a custom device the remote don't work (Power button flashes, nothing on the lcd-display). I tried it several ways and with different codes, also to build a own file with learned keys. Always the same problem.

Any idea?

Thanks

Sounds like the RDF has some incorrect settings which are causing a checksum or two to be set incorrectly.