@dankcushions i dont use bluetooth so never have that problem, the other one never happen im affortunate since i have the pi 4 never an issue. I understood the support but the answer need to be you can but is not recommended and only for pi4b model. The instructions i followed are that in docs, but never make the change in the memory, because i use like a pc the pi os. But all the steps are what are in the docs:

sudo apt update && sudo apt upgrade -y reboot sudo update-locale LANGUAGE="en_GB.UTF-8" LC_ALL="en_GB.UTF-8" reboot sudo apt install git lsb-release -y -》 This step isnt neccesary in Buster an Pi OS git clone --depth=1 https://github.com/RetroPie/RetroPie-Setup.git cd RetroPie-Setup sudo ./retropie_setup.sh **OK** then choose **Basic Install,** **OK**, Yes

And update the retropie script every week.