diff --git a/packages/bsp/common/etc/apt/preferences.d/armbian b/packages/bsp/common/etc/apt/preferences.d/armbian
index 04526b4d73..caca219f94 100644
--- a/packages/bsp/common/etc/apt/preferences.d/armbian
+++ b/packages/bsp/common/etc/apt/preferences.d/armbian
@@ -1,4 +1,13 @@
-# Install those packages rather from Armbian repo
+# Force installation of these packages from Armbian repository
+# Priority 1001 forces Armbian's version even if it requires downgrading
+# a currently installed version from another repository
+# Ubuntu snap versions have higher epoch version
 Package: firefox firefox-esr thunderbird
-Pin: origin apt.armbian.com
-Pin-Priority: 700
+Pin: release o=Armbian
+Pin-Priority: 1001
+
+# Deprioritize Ubuntu versions to avoid conflicts
+# Priority 50 ensures Ubuntu packages are not selected when Armbian versions exist
+Package: firefox firefox-esr thunderbird
+Pin: release o=Ubuntu
+Pin-Priority: 50