After messing with eMMC partitions, PBP won't boot, even from SD card

[granstr0m]

Code:

dd if=kali-linux-2020.2.x.x.x of=/dev/mmcblk2

sounds very good, that's the right command.

Just make sure you've unpacked the image before doing that. (you need an .img file, not .img.xz!) 
If it's still an .xz image, run

Code:

xz -d kali-linux-2020-x-x.img.xz

to extract it. 
Don't run these commands with offsets (like seek=32768) until you know what they're for.

Well, I was unpacking it on the fly via a pipe. But anyway, I got the impression that I should NOT overwrite the first 32Mb of the emmc in another thread here. But it should work just lika above then??? And it did work I could reboot once, but what the heck happened after that?? I didn't do anything to the emmc after booting inte Kali. I have booted from the SD card now and rebound the Emma but I do not want to be in this situation again in a few days after installing 100 of my favourite tools in Kali.