Maybe you want to install hyperion via cli after a downgrade to LE 9.1.5
http://archive.libreelec.tv/Li…C-RPi4.arm-9.1.501.img.gz
curl -# -L --get https://sourceforge.net/projec…n_rpi3_le.tar.gz/download | tar -C /storage -xz && \
curl -# -L --get https://sourceforge.net/projec…nelec-rpi.tar.gz/download | tar -C
/storage/hyperion/bin && \
chmod +x -R /storage/hyperion/bin
That worked on multiple rpi4 - but remember to suspend the autoupdate of le for now