Forum Discussion
Ken_PittTech
8 days agoActive Contributor
We had this happen as well. We have 2 PBX/locations that had working phones with the add-on.
I did the same thing as you and manually upgraded the firmware, it worked for a second then GoTo pushed the firmware back.
Strangely, if I swapped out the T54w with one I had in the shelf it came up and everything worked.