diff --git a/backend/managers/gameManager.js b/backend/managers/gameManager.js
index 1790353..465da2f 100644
--- a/backend/managers/gameManager.js
+++ b/backend/managers/gameManager.js
@@ -85,8 +85,9 @@ async function downloadPWR(branch = 'release', fileName = 'v8', progressCallback
       console.log(`[DownloadPWR] Mirror URL: ${url}`);
     } catch (error) {
       console.error(`[DownloadPWR] Failed to get mirror URL: ${error.message}`);
-      const { MIRROR_BASE_URL } = require('../services/versionManager');
-      url = `${MIRROR_BASE_URL}/${osName}/${arch}/${branch}/0_to_${extractVersionNumber(fileName)}.pwr`;
+      const { getPatchesBaseUrl } = require('../services/versionManager');
+      const baseUrl = await getPatchesBaseUrl();
+      url = `${baseUrl}/${osName}/${arch}/${branch}/0_to_${extractVersionNumber(fileName)}.pwr`;
       console.log(`[DownloadPWR] Fallback URL: ${url}`);
     }
   }
diff --git a/backend/services/versionManager.js b/backend/services/versionManager.js
index e846add..15f6f3a 100644
--- a/backend/services/versionManager.js
+++ b/backend/services/versionManager.js
@@ -3,20 +3,56 @@ const crypto = require('crypto');
 const fs = require('fs');
 const { getOS, getArch } = require('../utils/platformUtils');
 
-// Patches CDN via auth server redirect gateway (allows instant CDN switching)
+// Patches base URL fetched dynamically from auth server
 const AUTH_DOMAIN = process.env.HYTALE_AUTH_DOMAIN || 'auth.sanasol.ws';
-const MIRROR_BASE_URL = `https://${AUTH_DOMAIN}/patches`;
-const MIRROR_MANIFEST_URL = `${MIRROR_BASE_URL}/manifest.json`;
+const PATCHES_CONFIG_URL = `https://${AUTH_DOMAIN}/api/patches-config`;
 
 // Fallback: latest known build number if manifest is unreachable
 const FALLBACK_LATEST_BUILD = 11;
 
+let patchesBaseUrl = null;
+let patchesConfigTime = 0;
+const PATCHES_CONFIG_CACHE_DURATION = 300000; // 5 minutes
+
 let manifestCache = null;
 let manifestCacheTime = 0;
 const MANIFEST_CACHE_DURATION = 60000; // 1 minute
 
 /**
- * Fetch the mirror manifest from MEGA S4
+ * Fetch patches base URL from auth server config endpoint
+ */
+async function getPatchesBaseUrl() {
+  const now = Date.now();
+  if (patchesBaseUrl && (now - patchesConfigTime) < PATCHES_CONFIG_CACHE_DURATION) {
+    return patchesBaseUrl;
+  }
+
+  try {
+    console.log('[Mirror] Fetching patches config from:', PATCHES_CONFIG_URL);
+    const response = await axios.get(PATCHES_CONFIG_URL, {
+      timeout: 10000,
+      headers: { 'User-Agent': 'Hytale-F2P-Launcher' }
+    });
+
+    if (response.data && response.data.patches_url) {
+      patchesBaseUrl = response.data.patches_url.replace(/\/+$/, '');
+      patchesConfigTime = now;
+      console.log('[Mirror] Patches base URL:', patchesBaseUrl);
+      return patchesBaseUrl;
+    }
+    throw new Error('Invalid patches config');
+  } catch (error) {
+    console.error('[Mirror] Error fetching patches config:', error.message);
+    if (patchesBaseUrl) {
+      console.log('[Mirror] Using cached patches URL:', patchesBaseUrl);
+      return patchesBaseUrl;
+    }
+    throw error;
+  }
+}
+
+/**
+ * Fetch the mirror manifest
  */
 async function fetchMirrorManifest() {
   const now = Date.now();
@@ -26,9 +62,12 @@ async function fetchMirrorManifest() {
     return manifestCache;
   }
 
+  const baseUrl = await getPatchesBaseUrl();
+  const manifestUrl = `${baseUrl}/manifest.json`;
+
   try {
-    console.log('[Mirror] Fetching manifest from:', MIRROR_MANIFEST_URL);
-    const response = await axios.get(MIRROR_MANIFEST_URL, {
+    console.log('[Mirror] Fetching manifest from:', manifestUrl);
+    const response = await axios.get(manifestUrl, {
       timeout: 15000,
       headers: { 'User-Agent': 'Hytale-F2P-Launcher' }
     });
@@ -82,9 +121,10 @@ function getPlatformPatches(manifest, branch = 'release') {
  * Find optimal patch path using BFS with download size minimization
  * Returns array of { from, to, url, size, key } steps, or null if no path found
  */
-function findOptimalPatchPath(currentBuild, targetBuild, patches) {
+async function findOptimalPatchPath(currentBuild, targetBuild, patches) {
   if (currentBuild >= targetBuild) return [];
 
+  const baseUrl = await getPatchesBaseUrl();
   const edges = {};
   for (const patch of patches) {
     if (!edges[patch.from]) edges[patch.from] = [];
@@ -118,7 +158,7 @@ function findOptimalPatchPath(currentBuild, targetBuild, patches) {
         path: [...path, {
           from: edge.from,
           to: edge.to,
-          url: `${MIRROR_BASE_URL}/${edge.key}`,
+          url: `${baseUrl}/${edge.key}`,
           size: edge.size,
           key: edge.key
         }],
@@ -139,7 +179,7 @@ async function getUpdatePlan(currentBuild, targetBuild, branch = 'release') {
   const patches = getPlatformPatches(manifest, branch);
 
   // Try optimal path
-  const steps = findOptimalPatchPath(currentBuild, targetBuild, patches);
+  const steps = await findOptimalPatchPath(currentBuild, targetBuild, patches);
 
   if (steps && steps.length > 0) {
     const totalSize = steps.reduce((sum, s) => sum + s.size, 0);
@@ -150,10 +190,11 @@ async function getUpdatePlan(currentBuild, targetBuild, branch = 'release') {
   // Fallback: full install 0 -> target
   const fullPatch = patches.find(p => p.from === 0 && p.to === targetBuild);
   if (fullPatch) {
+    const baseUrl = await getPatchesBaseUrl();
     const step = {
       from: 0,
       to: targetBuild,
-      url: `${MIRROR_BASE_URL}/${fullPatch.key}`,
+      url: `${baseUrl}/${fullPatch.key}`,
       size: fullPatch.size,
       key: fullPatch.key
     };
@@ -200,7 +241,8 @@ async function getPWRUrl(branch = 'release', version = 'v11') {
     const fullPatch = patches.find(p => p.from === 0 && p.to === targetBuild);
 
     if (fullPatch) {
-      const url = `${MIRROR_BASE_URL}/${fullPatch.key}`;
+      const baseUrl = await getPatchesBaseUrl();
+      const url = `${baseUrl}/${fullPatch.key}`;
       console.log(`[Mirror] PWR URL: ${url}`);
       return url;
     }
@@ -216,7 +258,8 @@ async function getPWRUrl(branch = 'release', version = 'v11') {
   }
 
   // Construct mirror URL (will work if patch was uploaded but manifest is stale)
-  return `${MIRROR_BASE_URL}/${os}/${arch}/${branch}/0_to_${targetBuild}.pwr`;
+  const baseUrl = await getPatchesBaseUrl();
+  return `${baseUrl}/${os}/${arch}/${branch}/0_to_${targetBuild}.pwr`;
 }
 
 // Backward-compatible alias
@@ -240,14 +283,15 @@ function extractVersionNumber(version) {
   return isNaN(num) ? 0 : num;
 }
 
-function buildArchiveUrl(buildNumber, branch = 'release') {
+async function buildArchiveUrl(buildNumber, branch = 'release') {
+  const baseUrl = await getPatchesBaseUrl();
   const os = getOS();
   const arch = getArch();
-  return `${MIRROR_BASE_URL}/${os}/${arch}/${branch}/0_to_${buildNumber}.pwr`;
+  return `${baseUrl}/${os}/${arch}/${branch}/0_to_${buildNumber}.pwr`;
 }
 
 async function checkArchiveExists(buildNumber, branch = 'release') {
-  const url = buildArchiveUrl(buildNumber, branch);
+  const url = await buildArchiveUrl(buildNumber, branch);
   try {
     const response = await axios.head(url, { timeout: 10000 });
     return response.status === 200;
@@ -269,7 +313,7 @@ async function discoverAvailableVersions(latestKnown, branch = 'release') {
 
 async function extractVersionDetails(targetVersion, branch = 'release') {
   const buildNumber = extractVersionNumber(targetVersion);
-  const fullUrl = buildArchiveUrl(buildNumber, branch);
+  const fullUrl = await buildArchiveUrl(buildNumber, branch);
 
   return {
     version: targetVersion,
@@ -340,5 +384,5 @@ module.exports = {
   extractVersionNumber,
   getPlatformPatches,
   findOptimalPatchPath,
-  MIRROR_BASE_URL
+  getPatchesBaseUrl
 };
diff --git a/package.json b/package.json
index 6246448..8df035e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "hytale-f2p-launcher",
-  "version": "2.3.3",
+  "version": "2.3.4",
   "description": "A modern, cross-platform launcher for Hytale with automatic updates and multi-client support",
   "homepage": "https://github.com/amiayweb/Hytale-F2P",
   "main": "main.js",