On the ROCK 5B+, I am getting the following error at boot

[   12.361648] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[   12.389297] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[   12.390688] cfg80211: Loaded X.509 cert 'wens: 61c038651aabdcf94bd0ac7ff06c7248db18c600'
[   12.392699] cfg80211: loaded regulatory.db is malformed or signature is missing/invalid

 

I believe this is the cause of being unable to set the regulatory region for WiFi.
Running

sudo iw reg get

returns

global
country 00: DFS-UNSET

even after running

sudo iw reg set GB

 

try:

sudo apt update
sudo apt install wireless-regdb crda

wireless-regdb is already installed and apt returns

E: Unable to locate package crda

for crda.

 

Thanks for trying to help

CRDA is deprecated, not needed since Linux 4.15, hence the package removed with Debian Bookworm. Problem is the default regulatory database on Debian works with Debian kernel only, not with Armbian kernel. But wireless-regdb provides the upstream database as well, so you only need to switch:

 

sudo update-alternatives --set regulatory.db /lib/firmware/regulatory.db-upstream