Improve description of compatible systems

Author: rlefevre

README.md

@@ -14,12 +14,17 @@ See [Releases](https://github.com/dmy/elm-raspberry-pi/releases/) to install
 specific older versions.
 
 ## Compatibility 
-Built and tested on **Raspberry Pi 4 Model B with Raspbian GNU/Linux 10 Buster (32 bits)**.
+Built and tested on Raspberry Pi 4 Model B with Raspbian GNU/Linux 10 Buster (32 bits).
 
-Reported to work on:
-* Raspberry Pi 2 with Debian 10 Buster
+**It should work on all Raspberry Pis with Raspbian 10 Buster**, and more generally all Debian 10 based systems.
+
+It will **not work** on Raspbian/Debian 8 Jesse and 9 Stretch because some linked libraries are not compatible.
+
+It has also been reported to work on:
 * Raspberry Pi 4 with Ubuntu 19.10 (armhf+raspi3)
 
+If you have an aarch64 system with a 64 bits operating system, you will need 32 bits compatibility libraries and kernel option.
+
 *Please report any success or failure on others ARM platforms.*
 
 ## Node.js