Hi, first of all, thank you very much for bringing little Minix back to life.
Tried with two SD cards, a slow 2 gb and a fast 128 gb, it doesn't work. It hangs on the Libreelec logo.
With a slow usb of 4 gb and a fast one of 64 gb, both work correctly. Only wifi/bluetooth disappears sometimes but rebooting usually works.
The most curious thing is that with both SD cards, I have used a USB card adapter, and both start correctly.
With my low knowledge it could come from the SD card reader driver.