Got a case where a few of our test phones will no longer except the firmware.
I can log into the phones firmware page where its asking for the ip address of the tftp server and another line ask for the file. It will say invalid selection or something like this. I tested the tftp server with a tftp client and all works fine.
The options button on the phone refuses to work. So we are stuck. Nothing has come up on google for this issue. So if anyone knows how to reset these phones where the options button will work would be helpfull.