diff --git a/app/sovran_systemsos_web/static/app.js b/app/sovran_systemsos_web/static/app.js
index e62d49d..3fab03e 100644
--- a/app/sovran_systemsos_web/static/app.js
+++ b/app/sovran_systemsos_web/static/app.js
@@ -27,8 +27,9 @@ let _updateLog       = "";
 let _updatePollTimer = null;
 let _updateLogOffset = 0;
 let _serverWasDown   = false;
+let _updateFinished  = false;
 
-// ── DOM refs ────────────────────────────────────────────���─────────
+// ── DOM refs ──────────────────────────────────────────────────────
 
 const $tilesArea     = document.getElementById("tiles-area");
 const $updateBtn     = document.getElementById("btn-update");
@@ -250,8 +251,13 @@ async function loadNetwork() {
 async function checkUpdates() {
   try {
     const data = await apiFetch("/api/updates/check");
+    const hasUpdates = !!data.available;
     if ($updateBadge) {
-      $updateBadge.classList.toggle("visible", !!data.available);
+      $updateBadge.classList.toggle("visible", hasUpdates);
+    }
+    // Toggle button color: blue (default) → green (updates available)
+    if ($updateBtn) {
+      $updateBtn.classList.toggle("has-updates", hasUpdates);
     }
   } catch (_) {}
 }
@@ -263,6 +269,7 @@ function openUpdateModal() {
   _updateLog = "";
   _updateLogOffset = 0;
   _serverWasDown = false;
+  _updateFinished = false;
   if ($modalLog)      $modalLog.textContent = "";
   if ($modalStatus)   $modalStatus.textContent = "Starting update…";
   if ($modalSpinner)  $modalSpinner.classList.add("spinning");
@@ -323,6 +330,9 @@ function stopUpdatePoll() {
 }
 
 async function pollUpdateStatus() {
+  // Don't poll if we already know it's done
+  if (_updateFinished) return;
+
   try {
     const data = await apiFetch(`/api/updates/status?offset=${_updateLogOffset}`);
 
@@ -340,6 +350,7 @@ async function pollUpdateStatus() {
 
     // Check if finished
     if (!data.running) {
+      _updateFinished = true;
       stopUpdatePoll();
       if (data.result === "success") {
         onUpdateDone(true);
@@ -402,7 +413,7 @@ if ($modal) {
   });
 }
 
-// ── Init ──────────────────────────────────────────────────────────
+// ── Init ──────��───────────────────────────────────────────────────
 
 async function init() {
   try {
diff --git a/app/sovran_systemsos_web/static/style.css b/app/sovran_systemsos_web/static/style.css
index 2031d70..6263d99 100644
--- a/app/sovran_systemsos_web/static/style.css
+++ b/app/sovran_systemsos_web/static/style.css
@@ -100,9 +100,10 @@ button:disabled {
   opacity: 0.88;
 }
 
+/* Update button: blue by default, green when updates available */
 .btn-update {
-  background-color: var(--green);
-  color: #fff;
+  background-color: var(--accent-color);
+  color: #1e1e2e;
   position: relative;
   display: flex;
   align-items: center;
@@ -110,6 +111,15 @@ button:disabled {
 }
 
 .btn-update:hover:not(:disabled) {
+  opacity: 0.88;
+}
+
+.btn-update.has-updates {
+  background-color: var(--green);
+  color: #fff;
+}
+
+.btn-update.has-updates:hover:not(:disabled) {
   background-color: #27ae6e;
 }
 
@@ -451,6 +461,7 @@ button:disabled {
   background-color: #12121c;
   white-space: pre-wrap;
   word-break: break-all;
+  min-height: 200px;
 }
 
 .modal-footer {
@@ -462,13 +473,14 @@ button:disabled {
   border-top: 1px solid var(--border-color);
 }
 
+/* Reboot button: green */
 .btn-reboot {
-  background-color: var(--red);
+  background-color: var(--green);
   color: #fff;
 }
 
 .btn-reboot:hover:not(:disabled) {
-  background-color: #c0181f;
+  background-color: #27ae6e;
 }
 
 .btn-save {
@@ -527,4 +539,4 @@ button:disabled {
     width: 160px;
     min-height: 200px;
   }
-}
+}
\ No newline at end of file