I have a limesat HD air unit that often gave me the hello boot loop message once rebooted.
I decided to replace the power switch and power wire with one from an old viewsat ultra I had laying around and that seemed to have fixed the problem for me. I ran the unit for several days without powering off so it can run hot then powered off and on several times and now I don't get the boot loop anymore so if your unit gives you the boot loop try replacing the rear switch and maybe the power wire from another unit and see if that fixes the problem.