Mecool Ki Pro USB boot not working with uboot

[ballerburg9005]

As it was described in this issue, someone was able to boot Linux 5 on the Mecool Ki Pro S905d with the p201 u-boot image from eMMC, which is impossible with the u-boot that ships with the box.

However the eMMC of my box is busted, so I have to use a USB drive and modded the aml scripts accordingly.

I have poked around in the serial console, but couldn't find any evidence of the USB drive and it doesn't load the boot.scr file either. Just hangs with a looping pxe network boot.

Can someone please point me in the right direction, how to modify the u-boot image, or get a working u-boot image, or debug this further?

U-Boot 2021.04-00056-g13ac02db31-dirty (Apr 28 2021 - 22:43:24 +0800) p201

Model: Amlogic Meson GXBB P201 Development Board                               
SoC:   Amlogic Meson GXL (S905D) Revision 21:b (2:2)                           
DRAM:  2 GiB                                                                   
MMC:   mmc@70000: 0, mmc@72000: 1, mmc@74000: 2                                

[ballerburg9005]

Ok, I was a bit quick to press buttons and it loads now via 212 u-boot.

However, with the latest Libreelec Kernel I get the error "unsupported compression type 4".

If someone knows where to get the latest u-boot with support that would be great.