Tow-Boot, a new U-Boot option for Pinephone Pro and other devices

[aigilea]

Somehow that doesn't work for me.
I have flashed the SPI image to the microSD with: 

sudo dd if=spi.installer.img of=/dev/mmcblk0 bs=1M oflag=direct,sync status=progress

and then keeping the RE button pressed whilst pressing the power button, gives me a red light in the top left corner of the phone followed by a yellow light.
The next thing is that manjaro starts up.

1. "of=/dev/mmcblk0", are you sure this is the right device? It's usually /dev/sdX on a PC and /dev/mmcblk1 on the PPP.
2. I've used the following procedure: hold power button for a few seconds with battery removed, then install battery, then hold the RE button pressed and plug in the power cable.