I have a HDHomeRun FLEX 4K that had been working flawlessly for ~1 year. Recently, the majority of the channels I had detected were no longer tunable. A channel scan yielded an abridged list of channels (6) with the majority of the ATSC 1.0 channels available in my market missing. I am running the latest firmware (20250623), have an LTE filter on the feed coming in to the HDFX-4K, and have run channel detection a number of times with no change.
I purchased a HDHomeRun Quattro to confirm the ATSC 1.0 channels are still available in my market (they are). I am running the latest firmware (20250623), have an LTE filter on the feed coming in to the HDFX-4US, and have a total of 84 channels available.
Any idea why I am no longer seeing ATSC 1.0 channels on my HDFX-4K or how I can remedy this?