How do you get this thing to work?

[per]

I've tried to do several things to get this thing to work now. I only had success installing dietpi on an sdcard but the card failed for some reason and I had to rma it. No big deal, shit happens. Then I tried the maskrom flashing to ecc thing but that seems to have failed somehow. Sadly the downloads folder seems incomplete and a lot of things the wiki says is there just isn't, no eflash or anything. I have probably bricked something trying various combinations of things. If anyone knows how to reset this thing and get it to work I would appreciate some help. I just got this thing to run a couple of things on my network, now it's just a paperweight and not a good one.

[jelbo]

If your Zero2 has eMMC connected, you can use RKDevTool (it needs the driver, DriverAssitant_v5.12.zip) to erase it following the instructions on the wiki. I managed to flash a DietPi installation from microSD to eMMC and boot from that. More info here: https://dietpi.com/forum/t/nanopi-zero2-headache/25041