I have the original MXIII s802 1gb (ram) box, unfortunately this firmware doesn't run on it. It flashes allright, reboots, shows the libreelec logo, and then freezes. Since i bought the mxiii 1gb box i only got troubles with it. It seems most openelec/amlinux/libreelec arm builds are build for the 2gb version of the box. Only an old openelec amlinux from the russions runs (but with no deinterlacing so for me unusuable). I have been regretting not buying the 2gb version ( just to save a few bucks ) each day. A foolish decision it was...
Would my observation that there is no working 7.x build for s802 1gb mxiii box be right?