linaro@linaro-alip:~$ echo "deb http://apt.radxa.com/$stretch-testing/ ${stretch-testing} main" | sudo tee /etc/apt/sources.list.d/apt-radxa-com.list
deb http://apt.radxa.com/-testing/ testing main
linaro@linaro-alip:~$ sudo wget -O - apt.radxa.com/$stretch-testing/public.key | sudo apt-key add -
--2019-12-27 02:55:22-- http://apt.radxa.com/-testing/public.key
Resolving apt.radxa.com (apt.radxa.com)... 185.199.110.153, 185.199.109.153, 185.199.111.153, ...
Connecting to apt.radxa.com (apt.radxa.com)|185.199.110.153|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2019-12-27 02:55:22 ERROR 404: Not Found.
gpg: no valid OpenPGP data found.
linaro@linaro-alip:~$
I am very new to Linux. I am on a rock pi4b and was trying to get my Bluetooth to work. no matter what i tried it wouldn’t find any devices. I eventually tried to get the patch from the repo but it did not work and now I cant install anything with apt
I used the instructions here