Wow, October 5th I posted here asking for help... It's been a while! hahahaha
Hey @jock, I disappeared but I was still trying to work with my tv box and I managed to find a solution (or at least a palliative way that is working!)!
Just to remind you: it's a tv box with an RK3228A processor on an R29_5G card. Well, after endless attempts, I found a way to make it work without crashing...
I installed using multitool with "Armbian_22.02.0-trunk_Rk322x-box_bullseye_legacy_4.4.194_minimal" image . I can only access multitool via SSH because, as I mentioned at the time, the HDMI input dies when you turn on multitool (the funny thing is that, if you then reset to the tv box rom, the HDMI works again!). I did the installation normally from SSH.
(PS: if you use the image "Armbian_21.05.1_Rk322x-box_buster_legacy_4.4.194" it recognizes my Wifi 6256P (2.4 and 5.0), the one I installed didn't recognize it, but I was too lazy to reinstall everything just to test!)
After restarting the device, it had random crashes, sometimes when turning on, sometimes when using rk322x-config, sometimes when updating the OS. What solved my problem was, when I was able to access armbian-config, I changed the processor parameters. Its default speed is 1.2Ghz (RK3228A).
I limited the processor speed between 400000 and 1000000 (options that appeared there up to the limit of 1200000) and put it in performance mode. I restarted the device and voila! No more random crashes (not even punctual until now!!!)! I already installed the server for my 3d printer and everything is working wonderfully!
I can't say if the problem is the processor clock that is not reaching the maximum (when it tries, it freezes), if my processor is fake or what happens, but here, at least, it worked!
Brought it here in case anyone else is getting angry, just like I did!
(Again, sorry if there are any mistakes, my English is via google translator! Hahahaha)