I can get it to install and run from microSD on my MXIII-G however I'm unsure how to install to internal NAND? I've read that there is an option to install to NAND in the shutdown menu of LibreElec but there is no such option in my build.
Any advice how to install to internal memory? Would be nice to free up micoSD card and maybe a small speed improvement also.
I'm running the LibreELEC-S8X2.arm-8.2.RC3-MXIII-PLUS build.
You have to flash a "zip" file from recovery (start your MXIII-G with the toothpick).
I'have used LibreELEC-S8X2.default.arm-7.0-devel-20170124000114-r23703-ge207b78.zip, extracted the file LibreELEC-S8X2.default.arm-7.0-devel-update.zip it has inside and flashed it. Then you can upgrade using the "tar" files simply putting them in the update folder.