Here is a community build based on recent LE alpha. Kernel is build as 64bit with 32bit Userspace. It means you can use 32bit armhf packages.DISCLAIMER: This is a community build of LibreELEC. USE AT YOUR OWN RISK!Tar upgrade from aarch64 might work use the following steps:
Then copy the tar into /storage/.update/ and reboot
After everthing is updated you need to remove all the binary addons and reinstall those from the repo.
Beware that kodi caches zips in /storage/.kodi/addons/packages. Those have to be removed too.
If you are updating from one of my previous builds you just need to put the tar in /storage/.update/Download
LibRetro, DRM with inputstream and other things might work too.
Source Code: https://github.com/Raybuntu/LibreELEC.tv
Builds Mirror: https://mega.nz/#F!5hhyALLD!6pIE-xuLEMyajDHM1KsNcg
If you like my build and you want to buy me a beer or whatever.