Nano Pi R2S stuck on boot

Hello, I am trying to install ipfire on a Nano Pi R2S, I’m using serial console.

I wrote the img on a 16gb card, but this is all I get from serial console:

NOTICE: BL31: v2.12.0(release):
NOTICE: BL31: Built : 16:10:39, May 21 2026
NOTICE: BL31:Rockchip release version: v1.2

I get stuck here, nothing happens after, sys led is blinking continuously (2 times bink).

I tested with 2 sdcards, same problem. What am I doing wrong ?

Check to see if the following arrangement will work for you.

Regards

Thank you, I read that already, but I’m new to Ip Fire and I don’t now how to do what is described in that post, I need more details if anybody is willing to share.

My box is R2S (not R2S plus) which is supposed to be supported, is there any place where I can download this compiled U-boot (25.07) ?