I have the problem that the bootloader and kernel are too old in the mate image to run the on the new hardware.
Raspian works fine with a noobs install.
I tried the advice in the thread here
Taking the kernel7.img and 3+.dtb file it still doesn't work, the final part of advice is... To copy across
But I can't find that folder anywhere and using a windows PC none of the img files on the raspian sd mount windows just says they are corrupt.
Can someone please help get mate booting on a 3B+?