All Edge models are Version 21/TE4. Roamio and Bolt (Except Bolt OTA only which is TE4 only) can have either Version 20/TE3 or Version 21/TE4. To check, go to Settings & Messages> Help> Account and System Info> System Information > Software Version and starting with 20 or 21. (The TE4 menu may be slightly different.)Are you all wit5h the same cable company, I wonder?
I will go down now and check mine with Comcast.
Oh, where do I check that TE3/TE4 stuff.