diff --git a/typescript-version/package-lock.json b/typescript-version/package-lock.json
index 9f97f14..ecd52eb 100644
--- a/typescript-version/package-lock.json
+++ b/typescript-version/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "twitch-vod-manager",
-  "version": "4.1.12",
+  "version": "4.1.13",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "twitch-vod-manager",
-      "version": "4.1.12",
+      "version": "4.1.13",
       "license": "MIT",
       "dependencies": {
         "axios": "^1.6.0",
diff --git a/typescript-version/package.json b/typescript-version/package.json
index f705958..0f7846c 100644
--- a/typescript-version/package.json
+++ b/typescript-version/package.json
@@ -1,6 +1,6 @@
 {
   "name": "twitch-vod-manager",
-  "version": "4.1.12",
+  "version": "4.1.13",
   "description": "Twitch VOD Manager - Download Twitch VODs easily",
   "main": "dist/main.js",
   "author": "xRangerDE",
@@ -8,10 +8,11 @@
   "scripts": {
     "build": "tsc",
     "start": "npm run build && electron .",
+    "test:e2e:update-logic": "node scripts/smoke-test-update-version-logic.js",
     "test:e2e": "npm exec --yes --package=playwright -- node scripts/smoke-test.js",
     "test:e2e:guide": "npm exec --yes --package=playwright -- node scripts/smoke-test-template-guide.js",
     "test:e2e:full": "npm exec --yes --package=playwright -- node scripts/smoke-test-full.js",
-    "test:e2e:release": "npm run build && npm run test:e2e && npm run test:e2e:guide && npm run test:e2e:full",
+    "test:e2e:release": "npm run build && npm run test:e2e:update-logic && npm run test:e2e && npm run test:e2e:guide && npm run test:e2e:full",
     "test:e2e:stress": "npm run test:e2e:release && npm run test:e2e:release && npm run test:e2e:release",
     "pack": "npm run build && electron-builder --dir",
     "dist": "npm run build && electron-builder",
diff --git a/typescript-version/scripts/smoke-test-update-version-logic.js b/typescript-version/scripts/smoke-test-update-version-logic.js
new file mode 100644
index 0000000..1848a16
--- /dev/null
+++ b/typescript-version/scripts/smoke-test-update-version-logic.js
@@ -0,0 +1,84 @@
+const path = require('path');
+
+const {
+  normalizeUpdateVersion,
+  compareUpdateVersions,
+  isNewerUpdateVersion
+} = require(path.join(process.cwd(), 'dist', 'update-version-utils.js'));
+
+function run() {
+  const failures = [];
+
+  const assert = (condition, message) => {
+    if (!condition) failures.push(message);
+  };
+
+  const comparisons = [
+    { left: '4.1.18', right: '4.1.10', expected: 1 },
+    { left: '4.1.10', right: '4.1.18', expected: -1 },
+    { left: 'v4.1.12', right: '4.1.12', expected: 0 },
+    { left: '4.1.12', right: '4.1.12.1', expected: -1 },
+    { left: '4.2.0', right: '4.1.999', expected: 1 },
+    { left: '4.1.12-beta', right: '4.1.12', expected: 0 }
+  ];
+
+  const compareResults = comparisons.map((testCase) => {
+    const actual = compareUpdateVersions(testCase.left, testCase.right);
+    const pass = actual === testCase.expected;
+    assert(pass, `compare failed: ${testCase.left} vs ${testCase.right} expected ${testCase.expected}, got ${actual}`);
+    return { ...testCase, actual, pass };
+  });
+
+  const skipVersionScenarios = [
+    {
+      name: 'old downloaded, newer available',
+      downloaded: '4.1.11',
+      latestKnown: '4.1.18',
+      expectedNeedsNewer: true
+    },
+    {
+      name: 'already latest downloaded',
+      downloaded: '4.1.18',
+      latestKnown: '4.1.18',
+      expectedNeedsNewer: false
+    },
+    {
+      name: 'downgrade should not trigger',
+      downloaded: '4.1.18',
+      latestKnown: '4.1.11',
+      expectedNeedsNewer: false
+    }
+  ];
+
+  const scenarioResults = skipVersionScenarios.map((scenario) => {
+    const needsNewer = isNewerUpdateVersion(scenario.latestKnown, scenario.downloaded);
+    const pass = needsNewer === scenario.expectedNeedsNewer;
+    assert(pass, `${scenario.name} expected ${scenario.expectedNeedsNewer}, got ${needsNewer}`);
+    return { ...scenario, needsNewer, pass };
+  });
+
+  const normalizationChecks = {
+    fromVPrefix: normalizeUpdateVersion('v4.1.12') === '4.1.12',
+    trimmed: normalizeUpdateVersion(' 4.1.12 ') === '4.1.12'
+  };
+
+  assert(normalizationChecks.fromVPrefix, 'normalize did not remove v prefix');
+  assert(normalizationChecks.trimmed, 'normalize did not trim whitespace');
+
+  const summary = {
+    checks: {
+      compareResults,
+      scenarioResults,
+      normalizationChecks
+    },
+    failures
+  };
+
+  console.log(JSON.stringify(summary, null, 2));
+
+  if (failures.length) {
+    process.exitCode = 1;
+  }
+}
+
+run();
diff --git a/typescript-version/src/index.html b/typescript-version/src/index.html
index e1847dd..60e283a 100644
--- a/typescript-version/src/index.html
+++ b/typescript-version/src/index.html
@@ -457,7 +457,7 @@
 
                     <div class="settings-card">
                         <h3 id="updateTitle">Updates</h3>
-                        <p id="versionInfo" style="margin-bottom: 10px; color: var(--text-secondary);">Version: v4.1.12</p>
+                        <p id="versionInfo" style="margin-bottom: 10px; color: var(--text-secondary);">Version: v4.1.13</p>
                         <button class="btn-secondary" id="checkUpdateBtn" onclick="checkUpdate()">Nach Updates suchen</button>
                     </div>
 
@@ -502,7 +502,7 @@
                     <div class="status-dot" id="statusDot"></div>
                     <span id="statusText">Nicht verbunden</span>
                 </div>
-                <span id="versionText">v4.1.12</span>
+                <span id="versionText">v4.1.13</span>
             </div>
         </main>
     </div>
diff --git a/typescript-version/src/main.ts b/typescript-version/src/main.ts
index e7051bb..91a51d3 100644
--- a/typescript-version/src/main.ts
+++ b/typescript-version/src/main.ts
@@ -4,11 +4,12 @@ import * as fs from 'fs';
 import { spawn, ChildProcess, execSync, exec, spawnSync } from 'child_process';
 import axios from 'axios';
 import { autoUpdater } from 'electron-updater';
+import { compareUpdateVersions, isNewerUpdateVersion, normalizeUpdateVersion } from './update-version-utils';
 
 // ==========================================
 // CONFIG & CONSTANTS
 // ==========================================
-const APP_VERSION = '4.1.12';
+const APP_VERSION = '4.1.13';
 const UPDATE_CHECK_URL = 'http://24-music.de/version.json';
 
 // Paths
@@ -2944,45 +2945,12 @@ function createWindow(): void {
 // ==========================================
 // AUTO-UPDATER (electron-updater)
 // ==========================================
-function normalizeUpdateVersion(version: string | null | undefined): string {
-    return (version || '').trim().replace(/^v/i, '');
-}
-
-function compareUpdateVersions(left: string | null | undefined, right: string | null | undefined): number {
-    const a = normalizeUpdateVersion(left);
-    const b = normalizeUpdateVersion(right);
-
-    if (!a && !b) return 0;
-    if (!a) return -1;
-    if (!b) return 1;
-
-    const aParts = a.split('.').map((part) => {
-        const numeric = Number(part.replace(/[^0-9].*$/, ''));
-        return Number.isFinite(numeric) ? numeric : 0;
-    });
-
-    const bParts = b.split('.').map((part) => {
-        const numeric = Number(part.replace(/[^0-9].*$/, ''));
-        return Number.isFinite(numeric) ? numeric : 0;
-    });
-
-    const maxLength = Math.max(aParts.length, bParts.length);
-    for (let i = 0; i < maxLength; i += 1) {
-        const av = aParts[i] || 0;
-        const bv = bParts[i] || 0;
-        if (av > bv) return 1;
-        if (av < bv) return -1;
-    }
-
-    return 0;
-}
-
 function hasNewerKnownUpdateThanDownloaded(): boolean {
     if (!latestKnownUpdateVersion || !downloadedUpdateVersion) {
         return false;
     }
 
-    return compareUpdateVersions(latestKnownUpdateVersion, downloadedUpdateVersion) > 0;
+    return isNewerUpdateVersion(latestKnownUpdateVersion, downloadedUpdateVersion);
 }
 
 async function requestUpdateCheck(source: UpdateCheckSource, force = false): Promise<{ started: boolean; reason?: string }> {
diff --git a/typescript-version/src/update-version-utils.ts b/typescript-version/src/update-version-utils.ts
new file mode 100644
index 0000000..885ec35
--- /dev/null
+++ b/typescript-version/src/update-version-utils.ts
@@ -0,0 +1,34 @@
+export function normalizeUpdateVersion(version: string | null | undefined): string {
+    return (version || '').trim().replace(/^v/i, '');
+}
+
+function parseVersionPart(part: string): number {
+    const numeric = Number(part.replace(/[^0-9].*$/, ''));
+    return Number.isFinite(numeric) ? numeric : 0;
+}
+
+export function compareUpdateVersions(left: string | null | undefined, right: string | null | undefined): number {
+    const a = normalizeUpdateVersion(left);
+    const b = normalizeUpdateVersion(right);
+
+    if (!a && !b) return 0;
+    if (!a) return -1;
+    if (!b) return 1;
+
+    const aParts = a.split('.').map(parseVersionPart);
+    const bParts = b.split('.').map(parseVersionPart);
+    const maxLength = Math.max(aParts.length, bParts.length);
+
+    for (let i = 0; i < maxLength; i += 1) {
+        const av = aParts[i] || 0;
+        const bv = bParts[i] || 0;
+        if (av > bv) return 1;
+        if (av < bv) return -1;
+    }
+
+    return 0;
+}
+
+export function isNewerUpdateVersion(candidate: string | null | undefined, baseline: string | null | undefined): boolean {
+    return compareUpdateVersions(candidate, baseline) > 0;
+}