Still no joy, same issue.
on all the FW, last three lines after flashing I get:
Image installed successfully.
script succeeded result was ( Image Installed successfully).
Install from sdcard completed.
Then I select reboot system now.
on reboot LIbreELEC splash screen.
then vertical lines.
Changed HDMI Cable switch TV same.
Sure getting above my pay grade. Reloaded OE all okay.
Sure that your device has a S802 SoC?