Well, the important part is not disabling the eMMC. The important part is replacing U-Boot. If you don't have a USB to eMMC adaptor, you will have to disable the eMMC and re-enable it during boot.
I have a USB to eMMC adaptor and I've never used it. Since I haveto open the PNP
PBP anyway, I just do the eMMC disable/re-enable thing.
Also, it sounds as if your battery is dead or very low. Try to charge the PBP overnight, powered off, with a USB-C cable (unplug the barrel charger for this!)
I have a USB to eMMC adaptor and I've never used it. Since I haveto open the PNP
PBP anyway, I just do the eMMC disable/re-enable thing.
Also, it sounds as if your battery is dead or very low. Try to charge the PBP overnight, powered off, with a USB-C cable (unplug the barrel charger for this!)