Ditch it.
Go to amazon and buy a 49 buck fire TV.
Not gonna happen. I need the internet for my work.
Fire TV sticks are on sale now and pretty much always for $29 or less. Last year we bought two of the 4K Fire Sticks for $25 a piece. We have the free xfintity flex box... I like the remote, the box is a little bit of a pain to get set up the way we like it, but it is not a bad little unit and gives access to some free stuff from Comcast and you can install most of the popular apps... it is just not my favorite unit. The flex box the original poster was having trouble with was probably just taking a bunch of updates. It should be working fine soon.
We gave up cable years ago. The first streaming devices we got were Sony Blu-Ray players with the ability to add apps. Then we got the first Google Chromecast and a Roku. When I subscribed to DirecTV Now they gave me an AppleTV. Then we started using the Amazon Firesticks and FireTVs which at this point are my favorites.
All streaming devices have limited memory, so it actually is nice to have multiple units set up for different uses connected to an HDMI switch. I like playing around with different types of units. The processing power and video output on these inexpensive and tiny devices are amazing and there are an infinite number of options with them.
I could go on and on... I also like having a small PC hooked up to a television. I have “surplus” HP computers hooked up to my favorite TVs. One is a fifth generation I5 and the other is a 5th generation I7. I have a great program for recording streaming content that works on them and saving them to large hard drives... They are much better for web surfing than the streaming devices.