@lsdlsd88 hello! Thanks for sharing the photos and the serial logs; it looks like the stock firmware did not pick up the sdcard at all. The sdcard seems to be detected, but for some reason the rockchip miniloader of the stock firmware does not it as first source. Are you able to retrieve the first 100-200 megabytes of the original firmware via serial? You should be able to use dd even within Android. edit: ah-ha ok, I understand! there is misconfiguration in the webserver and the link changes; thanks, I updated it!

ok found the issue, I got the wrong multitool image. the link on 1st post was broken returning 404 so I had to search elsewhere ended up choosing 322x folder instead of 3318. correct link to update 1st post https://users.armbian.com/users.armbian.com/jock/web/rk3318/

Yes, you can completely resize it. You can also turn it to ZFS volume, and boot off of it. Just rebuild u-boot with ZFS support. Or ask, and I will provide patches required to have it.

It is. Before I managed to rebuild u-boot with ZFS support, I had to boot off of EMMC. I shrunk first partition with kernel, initrd etc, and then made another one with actual FS. Temporary solution for me back then. But gave me time to rebuild everything and enable native ZFS boot. Since then, I use EMMC only as a ZFS volume (another one in the mirror is NVME drive). never used armbian-config though - I am old-schooler, so I had to build whole stack myself to get what I wanted.

I am using the same board, and I also experienced this. Sometimes USB is not re-enumerated. Also, if you're using USB-C, sometimes some wires requires you to flip the connector. Basically some makers are cheaping out on cables, and they work only when you flip it. Also, if you'll leave the drive connected and reboot, does it find it? Have you checked u-boot, does it see it? Be aware, that USB-C connector is finicky. I had to replace it (resolder with new, sturdier variant), and then make it concrete-hard to break by solidifying epoxy over and under it (keep connector connected in it, and put some oil on it before plugging it in, so that epoxy won't leak inside it.