[wrxtasy]

Thanks for this - will do some reading.  Presumably this works with your LibreElec builds as well as CoreElec - or do you recommend CoreElec now?

I will have too have to do some reading too.

AMLogic Android Dual boot LE / CE devices I believe have their closed source u-boot stored in internal eMMC storage.
It's why command line modding and dd writing of a new u-boot has to be carried out.

Not for the faint hearted, and you really want to make sure you know how to backup the original u-boot (bootloader) using something like TWRP recovery first.