No update was pushed to mine yesterday on mine. Seems like it did a reload of the software by the description you stated. Only thing i can think of is it may have froze up from heat and corrupted itself when you power cycled it. Not sure of your location but it's been a cooker on Vancouver Island and all of BC. Make sure the receiver has good ventilation.
I am in Vancouver. Not sure what model of 4k pvr i have (will look when home.) but looking at the Telus website in Optik TV hardware. The one pictured is not the one i have. The pvr i have has vent slots in the top and on the front side lower right is a round power light (green when on, red when in standby)
The pvr is on its own in a media centre / tv stand. Lots of space around it. Also my place has A/C so not too hot compared to outside.
what exactly happened was, the HBO show ended. The box popped up with the message to press ok to start next episode. Next option was view next episode info. Been using on demand last 4 nights with no issue. I have even used CraveTV thru the guide and it worked fine.
I selected next episode info, froze. None of the buttons worked on the remote. First step was to press and hold the power button. seemed to restart. But then got a no signal message on TV. Unplugged the PVR and seemed to take a long time to come back. Seemed to restart but would get the no signal message. (maybe i should have had more patience)
last time i unplugged the T3200 and waited until it restarted. Then the PVR. It went thru the motions as i stated in the OP. As of 1300 today. System still running (not at home but have a sound bar plugged into the pvr optical to make noise for birds when i am out) I have NEST cams at home and can hear the TV sound thru those.
edit. had a closer look at telus hardware page. scrolling down the 4k pvr on lower left appears to be the one i have. Looks like i have the Technicolor 4k pvr box.
edit2. just got home. confirmed. I have the technicolor pvr