(Please click here for the german version)
If the Raspberry Pi responds with the error message „Repository ‚http://raspbian.raspberrypi.org/raspbian buster InRelease‘ changed its ‚Suite‘ value from ‚testing‘ to ’stable'“, this simple trick will help: Since Raspbian Buster is now officially available as a „stable“ version, you have to confirm this once: Then you can install new software again with „apt-get“ without any problems.
Before installing, however, you should always update the package lists: This works with this command: „sudo apt-get update“. If you have an earlier version of Raspbian Buster, the Raspberry will report this error afterwards:
Get:1 http://raspbian.raspberrypi.org/raspbian buster InRelease [15.0 kB]
Hit:2 http://archive.raspberrypi.org/debian buster InRelease
Reading package lists… Done
E: Repository ‚http://raspbian.raspberrypi.org/raspbian buster InRelease‘ changed its ‚Suite‘ value from ‚testing‘ to ’stable‘
N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details.
In order to get the updates from the new repository, you must first confirm this. Therefore, just enter the following command:
sudo apt update -y
The Raspberry Pi then asks if you want to download the updates from the new repository: „Do you want to accept these changes and continue updating from this repository? y/N“: This is confirmed automatically with the above command and the updates are loaded. Now you can update your package list and start installing new software!