Update: Tivimate will work on Nvidia shield but not the Firestick 4k. No service will update tv guide via tivimate on Firestick. Anyone have any idea why it works on one device but not the other? Are there any free EPGs for tivimate? Or is there something better than Smarters Pro for Firestick?
If you have a epg url from your provider then you can update the guide through tivimate I believe. Its buried somewhere in tivimate options.
You can always use xtream editor with your providers epg url and you can even edit out the channels you don't want. Xtream then creates another Url that input into tivimate and this does work. I can confirm this.
https://xtream-editor.com/en/editor/
Please note this is a paid service but they do offer some free trial features.
Are you using the official app? There's a modded apk (full/premium) out there that won't auto update the epg