HelderCR7, what image exactly did you put on your M8S+?
Is your remote working ok, or more precise... Can you wake up your box with original remote?
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Will any of the LibreElec builds work for this box?
Here:
MEGA
you could find 7.0.2 version for M8S+, which is working fine except 2 things reported:
1. stuttering with LiveTV (didn't try it myself, videos and streaming are playing great at my box)
2. unable to power on box with original remote - just power off (you have to pull the plug to wake up)