we have a DP750 with 4 Handsets that has been running for a while with no known issues. a week or so ago one of the users was playing with the phone and somehow upgraded the phone and the DP750 to the new firmware its the 18.104.22.168 version i believe. since then initially that phone would often reset when a call came in. i looked into the base station and found that it was on the new firmware and so was that phone. the other three phones were still on the old version. I though maybe the issue was that not all of the phones were on the same version so i upgraded the other three phones to the new firmware as well. this did seem to resolve the issue as the phone reset less but unfortunately it just seemed to spread it out across all the four phones. it does not happen very often (maybe once or twice in a week now). but it is very annoying when it does happen.
I have tried to factory reset all the handsets and base station then reconfigure (then again manually) i have tried to downgrade the phone firmware but that does not seem to take and while i have been able to upload the old firmware to the base station neither the base station or the phones will actually downgrade. not sure if i’m doing that right or not.
I am not as up to the play with looking at logs or retrieving them so there may be something very obvious that i’m missing if anyone has some ideas on how i could resolve this issue or see why its doing it (or maybe even help me downgrade the phones back to the original firmware…) that would be much appreciated
Cheers for your time,