From 0695c9931824bd9f1a1b858cce2e06934738d285 Mon Sep 17 00:00:00 2001
From: Christian Hesse <mail@eworm.de>
Date: Tue, 8 Mar 2022 22:47:26 +0100
Subject: firmware-upgrade-reboot: ignore firmware downgrade

(cherry picked from commit 122f90b6930ba499f917887b6e25adae3109a513)
---
 firmware-upgrade-reboot | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/firmware-upgrade-reboot b/firmware-upgrade-reboot
index a3a25db..ac2cb55 100644
--- a/firmware-upgrade-reboot
+++ b/firmware-upgrade-reboot
@@ -11,11 +11,15 @@
 :while ($GlobalFunctionsReady != true) do={ :delay 500ms; }
 
 :global LogPrintExit2;
+:global VersionToNum;
 
 :local RouterBoard [ / system routerboard get ];
 :if ($RouterBoard->"current-firmware" = $RouterBoard->"upgrade-firmware") do={
   $LogPrintExit2 info $0 ("Firmware is already up to date.") true;
 }
+:if ([ $VersionToNum ($RouterBoard->"current-firmware") ] > [ $VersionToNum ($RouterBoard->"upgrade-firmware") ]) do={
+  $LogPrintExit2 info $0 ("Different firmware version is available, but it is a downgrade. Ignoring.") true;
+}
 
 :if ([ / system routerboard settings get auto-upgrade ] = false) do={
   $LogPrintExit2 info $0 ("Firmware version " . $RouterBoard->"upgrade-firmware" . \
-- 
cgit v1.2.3-54-g00ecf