Here is the Test Build versions of Kodi 18.8 - with HTTP/1 fix for Android Platforms;

- 32bit
Code:
http://mirrors.kodi.tv/test-builds/android/arm/kodi-20201020-2ca197cb-Leia-armeabi-v7a.apk
- 64bit
Code:
http://mirrors.kodi.tv/test-builds/android/arm64-v8a/kodi-20201020-2ca197cb-Leia-arm64-v8a.apk
*I've tested only the 32bit(v7a) file, and working perfectly, so I assume the same for the 64bit(v8a) version.

*Copy and install to your device(or install from a USB stick), make sure Kodi is not running and that "Allow Unknown Sources" is Enabled in your
Android Security settings.
Click the file, then click Install and click Ok to confirm the Update to Kodi.

If you are still using IPTVXtra2 v16.5 without a modified External Player file, you don't need to do anything.

If you are using IPTVXtra2 v16.5 with a modified External Player file, you need to open IPTVXtra2, Click PVR Setup & System Tools, click Change
External Player Status (Disable the External Player(which deletes your modified file)), shutdown and restart Kodi.

Open IPTVXtra2 and now Enable the External Player (which will load the original External Player file).

Restart Kodi and everything should be back to normal.

/Shooty