diff --git a/VERSION b/VERSION
index 53adb84..a7ee35a 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.8.2
+1.8.3
diff --git a/changelog.json b/changelog.json
index 66edd23..66bdab7 100644
--- a/changelog.json
+++ b/changelog.json
@@ -1,5 +1,23 @@
 {
   "versions": [
+    {
+      "version": "1.8.3",
+      "date": "2026-05-13",
+      "changes": {
+        "features": [
+          "Sidebar: affichage de la version firmware juste sous le nom du capteur (visible sur toutes les pages)"
+        ],
+        "improvements": [
+          "launcher.php: get_config_sqlite renvoie maintenant firmware_version (lu depuis le fichier VERSION) — pas de nouveau endpoint, pas de nouveau fetch côté UI",
+          "topbar-logo.js: peuple .sideBar_firmwareVersion via le fetch config existant + MutationObserver (compatible avec le chargement asynchrone de sidebar.html)"
+        ],
+        "fixes": [],
+        "compatibility": [
+          "Aucun risque sur les pages existantes: les handlers AJAX par page restent inchangés, seul launcher.php ajoute un champ dans la réponse JSON"
+        ]
+      },
+      "notes": "Permet d'identifier d'un coup d'oeil la version firmware d'un capteur depuis n'importe quelle page de l'UI — utile pour decider du chemin de mise a jour (online git pull >= v0.x, offline ZIP upload >= v1.4.0) sans avoir a fouiller dans admin.html ou en SSH."
+    },
     {
       "version": "1.8.2",
       "date": "2026-05-12",
diff --git a/html/assets/js/topbar-logo.js b/html/assets/js/topbar-logo.js
index ba2293a..fd8c40e 100644
--- a/html/assets/js/topbar-logo.js
+++ b/html/assets/js/topbar-logo.js
@@ -37,7 +37,18 @@ document.addEventListener('DOMContentLoaded', () => {
             }
         }
 
-        // 2. Sidebar Screen Tab Logic - Use class since ID might be duplicated (desktop/mobile)
+        // 2. Sidebar firmware version display
+        const versionElements = document.querySelectorAll('.sideBar_firmwareVersion');
+        if (versionElements.length > 0 && config.firmware_version) {
+            const versionText = 'v' + config.firmware_version;
+            versionElements.forEach(el => {
+                if (el.textContent !== versionText) {
+                    el.textContent = versionText;
+                }
+            });
+        }
+
+        // 3. Sidebar Screen Tab Logic - Use class since ID might be duplicated (desktop/mobile)
         const navScreenElements = document.querySelectorAll('.nav-screen-item');
         if (navScreenElements.length > 0) {
             navScreenElements.forEach(navScreen => {
diff --git a/html/launcher.php b/html/launcher.php
index 183672f..094d3c9 100755
--- a/html/launcher.php
+++ b/html/launcher.php
@@ -65,7 +65,15 @@ if ($type == "get_config_sqlite") {
             
             $result[$key] = $parsed_value;
         }
-        
+
+        // Inject firmware version (read from VERSION file, not from DB)
+        // Piggybacks on this existing fetch so the sidebar can show it without
+        // a separate AJAX call (avoids hitting the 6-connection browser limit).
+        $versionFile = '/var/www/nebuleair_pro_4g/VERSION';
+        $result['firmware_version'] = file_exists($versionFile)
+            ? trim(file_get_contents($versionFile))
+            : 'unknown';
+
         // Return JSON response
         header('Content-Type: application/json');
         echo json_encode($result, JSON_PRETTY_PRINT);
diff --git a/html/sidebar.html b/html/sidebar.html
index 0bfea5b..3a85024 100755
--- a/html/sidebar.html
+++ b/html/sidebar.html
@@ -93,6 +93,7 @@
   <div class="sidebar-footer text-center text-white">
     <hr>
     <span class="sideBar_sensorName">NebuleAir</span>
+    <small class="sideBar_firmwareVersion d-block" style="font-size: 0.7rem; opacity: 0.65;"></small>
     <div class="sidebar-hotspot-badge mt-2" style="display:none;">
       <a href="wifi.html" class="text-decoration-none">
         <span class="badge text-bg-warning w-100 py-2" style="font-size: 0.75rem;">