diff --git a/app/downloads/errors.js b/app/downloads/errors.js
index 689332e..d7a3685 100644
--- a/app/downloads/errors.js
+++ b/app/downloads/errors.js
@@ -19,6 +19,7 @@ import { t } from '../i18n/core.js';
     [/not enough memory to extract/i, "noMemory", "reopenApp"],
     [/archive password/i, "archivePassword", "otherSource"],
     [/not a game file/i, "notGameFile", "otherSource"],
+    [/fake PKGs install only/i, "pkgFirmware", "otherSource"],
     // A set's last volume ends where the archive goes on, or its first is not where it starts: the source lists
     // too few volumes, and downloading them again fails the same way. A lone archive the worker cannot open
     // fails with the same words; that one is downloaded again.
diff --git a/app/i18n/locales/ar.json b/app/i18n/locales/ar.json
index 5c6680e..0e0ea1d 100644
--- a/app/i18n/locales/ar.json
+++ b/app/i18n/locales/ar.json
@@ -173,6 +173,7 @@
   "errors.interrupted": "توقف عند إغلاق التطبيق",
   "errors.linkGone": "رابط التحميل لم يعد يعمل",
   "errors.notGameFile": "أرسل المضيف صفحة ويب بدلاً من اللعبة",
+  "errors.pkgFirmware": "لا تُثبَّت حزم PKG المزيفة إلا على البرنامج الثابت 11.60 أو أقدم",
   "errors.missingParts": "هذا المصدر تنقصه أجزاء",
   "errors.needsBrowser": "هذا المصدر يحتاج متصفح ويب",
   "errors.noConnection": "لا يوجد اتصال بالخادم",
diff --git a/app/i18n/locales/bn.json b/app/i18n/locales/bn.json
index 0056436..ccdc401 100644
--- a/app/i18n/locales/bn.json
+++ b/app/i18n/locales/bn.json
@@ -173,6 +173,7 @@
   "errors.interrupted": "অ্যাপ বন্ধ হওয়ার সময় থেমেছিল",
   "errors.linkGone": "ডাউনলোড লিঙ্ক আর কাজ করে না",
   "errors.notGameFile": "হোস্ট গেমের বদলে একটি ওয়েব পেজ পাঠিয়েছে",
+  "errors.pkgFirmware": "ফেক PKG শুধু ফার্মওয়্যার 11.60 বা তার আগের সংস্করণে ইনস্টল হয়",
   "errors.missingParts": "এই উৎসে কিছু অংশ নেই",
   "errors.needsBrowser": "এই উৎসের একটি ওয়েব ব্রাউজার প্রয়োজন",
   "errors.noConnection": "সার্ভারের সাথে কোনো সংযোগ নেই",
diff --git a/app/i18n/locales/de.json b/app/i18n/locales/de.json
index 87d1f40..b49c120 100644
--- a/app/i18n/locales/de.json
+++ b/app/i18n/locales/de.json
@@ -173,6 +173,7 @@
   "errors.interrupted": "Gestoppt, als die App geschlossen wurde",
   "errors.linkGone": "Download-Link funktioniert nicht mehr",
   "errors.notGameFile": "Der Host hat eine Webseite statt des Spiels gesendet",
+  "errors.pkgFirmware": "Fake-PKGs lassen sich nur bis Firmware 11.60 installieren",
   "errors.missingParts": "Dieser Quelle fehlen Teile",
   "errors.needsBrowser": "Diese Quelle benötigt einen Webbrowser",
   "errors.noConnection": "Keine Verbindung zum Server",
diff --git a/app/i18n/locales/en.json b/app/i18n/locales/en.json
index 67625e7..e6f93c3 100644
--- a/app/i18n/locales/en.json
+++ b/app/i18n/locales/en.json
@@ -174,6 +174,7 @@
     "errors.interrupted": "Stopped when the app closed",
     "errors.linkGone": "Download link no longer works",
     "errors.notGameFile": "The host sent a web page instead of the game",
+    "errors.pkgFirmware": "Fake PKGs only install on firmware 11.60 or older",
     "errors.missingParts": "This source is missing parts",
     "errors.needsBrowser": "This source needs a web browser",
     "errors.noConnection": "No connection to the server",
diff --git a/app/i18n/locales/es.json b/app/i18n/locales/es.json
index fa88e1c..5860577 100644
--- a/app/i18n/locales/es.json
+++ b/app/i18n/locales/es.json
@@ -173,6 +173,7 @@
   "errors.interrupted": "Detenido cuando la app se cerró",
   "errors.linkGone": "El enlace de descarga ya no funciona",
   "errors.notGameFile": "El servidor envió una página web en lugar del juego",
+  "errors.pkgFirmware": "Los PKG falsos solo se instalan con firmware 11.60 o anterior",
   "errors.missingParts": "A esta fuente le faltan partes",
   "errors.needsBrowser": "Esta fuente necesita un navegador web",
   "errors.noConnection": "Sin conexión al servidor",
diff --git a/app/i18n/locales/fa.json b/app/i18n/locales/fa.json
index 4761c55..3713250 100644
--- a/app/i18n/locales/fa.json
+++ b/app/i18n/locales/fa.json
@@ -174,6 +174,7 @@
     "errors.interrupted": "با بسته شدن برنامه متوقف شد",
     "errors.linkGone": "لینک دانلود دیگر کار نمی‌کند",
     "errors.notGameFile": "میزبان به جای بازی یک صفحهٔ وب فرستاد",
+    "errors.pkgFirmware": "PKGهای جعلی فقط روی فریمور 11.60 یا قدیمی‌تر نصب می‌شوند",
     "errors.missingParts": "این منبع بخش‌هایی کم دارد",
     "errors.needsBrowser": "این منبع به مرورگر وب نیاز دارد",
     "errors.noConnection": "اتصال به سرور برقرار نیست",
diff --git a/app/i18n/locales/fr.json b/app/i18n/locales/fr.json
index 42ed500..cf0cda8 100644
--- a/app/i18n/locales/fr.json
+++ b/app/i18n/locales/fr.json
@@ -173,6 +173,7 @@
   "errors.interrupted": "Arrêté quand l'app s'est fermée",
   "errors.linkGone": "Le lien de téléchargement ne fonctionne plus",
   "errors.notGameFile": "L'hébergeur a envoyé une page web au lieu du jeu",
+  "errors.pkgFirmware": "Les faux PKG ne s'installent qu'en firmware 11.60 ou antérieur",
   "errors.missingParts": "Il manque des parties à cette source",
   "errors.needsBrowser": "Cette source nécessite un navigateur web",
   "errors.noConnection": "Pas de connexion au serveur",
diff --git a/app/i18n/locales/hi.json b/app/i18n/locales/hi.json
index faada89..3603ce6 100644
--- a/app/i18n/locales/hi.json
+++ b/app/i18n/locales/hi.json
@@ -173,6 +173,7 @@
   "errors.interrupted": "जब ऐप बंद हुआ तो रुका",
   "errors.linkGone": "डाउनलोड लिंक अब काम नहीं करता",
   "errors.notGameFile": "होस्ट ने गेम की जगह एक वेब पेज भेजा",
+  "errors.pkgFirmware": "फ़ेक PKG केवल फ़र्मवेयर 11.60 या पुराने पर इंस्टॉल होते हैं",
   "errors.missingParts": "इस स्रोत में भाग कम हैं",
   "errors.needsBrowser": "यह स्रोत एक वेब ब्राउज़र की आवश्यकता है",
   "errors.noConnection": "सर्वर से कोई कनेक्शन नहीं",
diff --git a/app/i18n/locales/id.json b/app/i18n/locales/id.json
index 1c6e37c..1ea7227 100644
--- a/app/i18n/locales/id.json
+++ b/app/i18n/locales/id.json
@@ -173,6 +173,7 @@
   "errors.interrupted": "Dihentikan saat aplikasi ditutup",
   "errors.linkGone": "Tautan unduhan tidak lagi berfungsi",
   "errors.notGameFile": "Host mengirim halaman web, bukan gamenya",
+  "errors.pkgFirmware": "PKG palsu hanya bisa dipasang di firmware 11.60 atau lebih lama",
   "errors.missingParts": "Sumber ini kekurangan bagian",
   "errors.needsBrowser": "Sumber ini memerlukan browser web",
   "errors.noConnection": "Tidak ada koneksi ke server",
diff --git a/app/i18n/locales/it.json b/app/i18n/locales/it.json
index 2a21994..45d487a 100644
--- a/app/i18n/locales/it.json
+++ b/app/i18n/locales/it.json
@@ -179,6 +179,7 @@
   "errors.interrupted": "Interrotto alla chiusura dell'app",
   "errors.linkGone": "Il link di download non funziona più",
   "errors.notGameFile": "L'host ha inviato una pagina web invece del gioco",
+  "errors.pkgFirmware": "I fake PKG si installano solo con firmware 11.60 o precedente",
   "errors.missingParts": "In questa fonte mancano delle parti",
   "errors.needsBrowser": "Questa fonte richiede un browser web",
   "errors.noConnection": "Nessuna connessione al server",
diff --git a/app/i18n/locales/ja.json b/app/i18n/locales/ja.json
index 2173ef6..2657cbc 100644
--- a/app/i18n/locales/ja.json
+++ b/app/i18n/locales/ja.json
@@ -173,6 +173,7 @@
   "errors.interrupted": "アプリの終了時に停止しました",
   "errors.linkGone": "ダウンロードリンクが無効です",
   "errors.notGameFile": "ホストがゲームではなくウェブページを送信しました",
+  "errors.pkgFirmware": "偽PKGはファームウェア11.60以前でのみインストールできます",
   "errors.missingParts": "この入手元にはパートが足りません",
   "errors.needsBrowser": "この入手元にはWebブラウザが必要です",
   "errors.noConnection": "サーバーに接続できません",
diff --git a/app/i18n/locales/pt-BR.json b/app/i18n/locales/pt-BR.json
index 10dead6..3f7e20d 100644
--- a/app/i18n/locales/pt-BR.json
+++ b/app/i18n/locales/pt-BR.json
@@ -173,6 +173,7 @@
   "errors.interrupted": "Interrompido quando o app fechou",
   "errors.linkGone": "Link de download não funciona mais",
   "errors.notGameFile": "O servidor enviou uma página da web em vez do jogo",
+  "errors.pkgFirmware": "PKGs falsos só instalam no firmware 11.60 ou anterior",
   "errors.missingParts": "Faltam partes nesta fonte",
   "errors.needsBrowser": "Esta fonte precisa de navegador web",
   "errors.noConnection": "Sem conexão com o servidor",
diff --git a/app/i18n/locales/ru.json b/app/i18n/locales/ru.json
index 9dbe006..33e0f9d 100644
--- a/app/i18n/locales/ru.json
+++ b/app/i18n/locales/ru.json
@@ -173,6 +173,7 @@
   "errors.interrupted": "Остановлено при закрытии приложения",
   "errors.linkGone": "Ссылка на загрузку больше не работает",
   "errors.notGameFile": "Хостинг прислал веб-страницу вместо игры",
+  "errors.pkgFirmware": "Фейковые PKG устанавливаются только на прошивке 11.60 и ниже",
   "errors.missingParts": "В этом источнике не хватает частей",
   "errors.needsBrowser": "Этот источник требует веб-браузер",
   "errors.noConnection": "Нет соединения с сервером",
diff --git a/app/i18n/locales/ur.json b/app/i18n/locales/ur.json
index d94b35a..81650d8 100644
--- a/app/i18n/locales/ur.json
+++ b/app/i18n/locales/ur.json
@@ -173,6 +173,7 @@
   "errors.interrupted": "ایپ بند ہونے پر روک دی گئی",
   "errors.linkGone": "ڈاؤن لوڈ لنک اب کام نہیں کرتی",
   "errors.notGameFile": "ہوسٹ نے گیم کے بجائے ویب پیج بھیجا",
+  "errors.pkgFirmware": "جعلی PKG صرف فرم ویئر 11.60 یا اس سے پرانے پر انسٹال ہوتے ہیں",
   "errors.missingParts": "اس ذریعے میں حصے کم ہیں",
   "errors.needsBrowser": "اس ذریعے کو ویب براؤزر کی ضرورت ہے",
   "errors.noConnection": "سرور سے کوئی رابطہ نہیں",
diff --git a/app/i18n/locales/zh-Hans.json b/app/i18n/locales/zh-Hans.json
index 2ea51df..0141926 100644
--- a/app/i18n/locales/zh-Hans.json
+++ b/app/i18n/locales/zh-Hans.json
@@ -173,6 +173,7 @@
   "errors.interrupted": "应用关闭时已停止",
   "errors.linkGone": "下载链接已失效",
   "errors.notGameFile": "托管网站发送的是网页而不是游戏",
+  "errors.pkgFirmware": "伪 PKG 仅能在 11.60 或更早的固件上安装",
   "errors.missingParts": "此来源缺少部分文件",
   "errors.needsBrowser": "此来源需要网页浏览器",
   "errors.noConnection": "无法连接到服务器",
diff --git a/app/state/firmware.js b/app/state/firmware.js
new file mode 100644
index 0000000..1858391
--- /dev/null
+++ b/app/state/firmware.js
@@ -0,0 +1,30 @@
+import { DeviceInfo } from '@ps5-react/core';
+
+  // Fake PKGs install only up to this firmware; above it the system refuses them, after the whole
+  // download (issues #6 and #17). Version strings read like "13.200.001": major and two minor digits.
+  var LAST_PKG_FIRMWARE = [11, 60];
+  var PKG_FIRMWARE_ERROR = "Fake PKGs install only on firmware 11.60 or older. Choose another source.";
+  var PKG_FORMATS = /* @__PURE__ */ new Set(["pkg", "fpkg"]);
+  function firmwareVersion() {
+    let text;
+    try {
+      text = DeviceInfo.get().firmware;
+    } catch {
+      return null;
+    }
+    const match = /(\d+)\.(\d{2})/.exec(text || "");
+    return match ? [Number(match[1]), Number(match[2])] : null;
+  }
+  // Unknown firmware (the desktop preview, an old runtime) keeps PKGs offered, as before.
+  function fakePackagesInstall() {
+    const version = firmwareVersion();
+    if (!version) return true;
+    const [major, minor] = version, [lastMajor, lastMinor] = LAST_PKG_FIRMWARE;
+    return major < lastMajor || major === lastMajor && minor <= lastMinor;
+  }
+  function withoutUninstallablePackages(releases) {
+    if (fakePackagesInstall()) return releases;
+    return releases.map((release) => PKG_FORMATS.has(release.format) && !release.unavailableReason ? { ...release, unavailableReason: PKG_FIRMWARE_ERROR } : release);
+  }
+
+export { PKG_FIRMWARE_ERROR, fakePackagesInstall, withoutUninstallablePackages };
diff --git a/app/state/release-cache.js b/app/state/release-cache.js
index fd54039..cf43b13 100644
--- a/app/state/release-cache.js
+++ b/app/state/release-cache.js
@@ -1,6 +1,7 @@
 // ../pub-game-store/native/state/release-cache.js
 // reconstructed from the esbuild bundle in eboot.bin
 
+import { withoutUninstallablePackages } from './firmware.js';
 import { releaseSets } from './release-sets.js';
 
   var KEPT2 = 6;
@@ -12,7 +13,7 @@ import { releaseSets } from './release-sets.js';
       if (!releases) {
         const parsed = JSON.parse(read(file));
         if (!Array.isArray(parsed)) throw new Error("Invalid release data; rebuild the catalog.");
-        releases = releaseSets(parsed);
+        releases = withoutUninstallablePackages(releaseSets(parsed));
         if (games2.size === KEPT2) games2.delete(games2.keys().next().value);
       }
       games2.delete(file);