diff --git a/README.md b/README.md
index 11a5e73..82020cf 100644
--- a/README.md
+++ b/README.md
@@ -353,3 +353,12 @@ https://ppa.launchpadcontent.net/liujianfeng1994/panfork-mesa/ubuntu/dists/jammy
 verificare con questo fatto apposta per OPI5
 
 https://forum.armbian.com/topic/26450-accelerated-video-options-for-installing-and-running/
+
+	sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 0B2F0747E3BD546820A639B68065BE1FC67AABDE 
+
+```sh
+deb https://ppa.launchpadcontent.net/liujianfeng1994/panfork-mesa/ubuntu jammy main 
+deb-src https://ppa.launchpadcontent.net/liujianfeng1994/panfork-mesa/ubuntu jammy main 
+deb https://ppa.launchpadcontent.net/liujianfeng1994/rockchip-multimedia/ubuntu jammy main 
+deb-src https://ppa.launchpadcontent.net/liujianfeng1994/rockchip-multimedia/ubuntu jammy main 
+```
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