diff --git a/.github/badges/data.json b/.github/badges/data.json
index f934cba..1d5ac1a 100644
--- a/.github/badges/data.json
+++ b/.github/badges/data.json
@@ -1,5 +1,7 @@
 {
   "switch_firmware": "22.1.0",
+  "release_zip_downloads_snapshot": 2318,
+  "release_zip_downloads_lifetime": 2318,
   "release_zip_downloads_total": 2318,
   "omninx_pack_version": "1.0.0-b12"
 }
diff --git a/.github/workflows/update-badge-data.yml b/.github/workflows/update-badge-data.yml
index f959a24..e542c6d 100644
--- a/.github/workflows/update-badge-data.yml
+++ b/.github/workflows/update-badge-data.yml
@@ -1,4 +1,4 @@
-# Aktualisiert täglich .github/badges/data.json (Download-Summe, OmniNX-Version, kompatible FW = Tag des letzten Releases in OmniNX/NX_Firmware).
+# Aktualisiert täglich .github/badges/data.json (Download-Lifetime mit Asset-Swap-Erkennung, OmniNX-Version, FW-Tag).
 # Läuft auf Gitea Actions wie die übrigen Workflows (.github/workflows); github.api_url = Gitea-API.
 
 name: Update badge-data
diff --git a/README.md b/README.md
index c22e73a..499566b 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 [![Aktuelle Version](https://img.shields.io/badge/dynamic/json?url=https%3A%2F%2Fgit.niklascfw.de%2FOmniNX%2FOmniNX%2Fraw%2Fbranch%2Fmain%2F.github%2Fbadges%2Fdata.json&query=%24.omninx_pack_version&label=OmniNX%20Version&color=blue)](https://git.niklascfw.de/OmniNX/OmniNX/releases/latest)
 [![Firmware](https://img.shields.io/github/v/release/THZoria/NX_Firmware?display_name=release&filter=*22.1.0&label=Kompatibel%20mit%20FW&color=189c11&logo=nintendoswitch)](https://github.com/THZoria/NX_Firmware/releases/tag/22.1.0)
-[![OmniNX Pack Downloads](https://img.shields.io/badge/dynamic/json?url=https%3A%2F%2Fgit.niklascfw.de%2FOmniNX%2FOmniNX%2Fraw%2Fbranch%2Fmain%2F.github%2Fbadges%2Fdata.json&query=%24.release_zip_downloads_total&label=OmniNX%20Downloads&color=6f42c1)](https://git.niklascfw.de/OmniNX/OmniNX/releases)
+[![OmniNX Pack Downloads](https://img.shields.io/badge/dynamic/json?url=https%3A%2F%2Fgit.niklascfw.de%2FOmniNX%2FOmniNX%2Fraw%2Fbranch%2Fmain%2F.github%2Fbadges%2Fdata.json&query=%24.release_zip_downloads_lifetime&label=OmniNX%20Downloads&color=6f42c1)](https://git.niklascfw.de/OmniNX/OmniNX/releases)
 
 OmniNX ist ein vollständiges Custom-Firmware-Setup für die Nintendo Switch, verfügbar in drei Varianten mit Fokus auf Flexibilität und Modularität.
 
@@ -121,7 +121,7 @@ Orientierung an den [NiklasCFW Docs](https://docs.niklascfw.de/switch/omninx/ein
 OmniNX/
 ├── .github/
 │   ├── badges/
-│   │   └── data.json # README-Shields (Version, Downloads, FW); täglich per CI scripts/update-badge-data.py
+│   │   └── data.json # README-Shields (Version, FW, Download-Lifetime); täglich per CI scripts/update-badge-data.py
 │   └── workflows/
 ├── staging/          # Gemeinsame Install-Stage-Dateien (Bootloader, Payloads, Nyx, etc.)
 ├── variants/         # Varianten-Inhalt
diff --git a/scripts/update-badge-data.py b/scripts/update-badge-data.py
index 665e0a4..058ecc9 100644
--- a/scripts/update-badge-data.py
+++ b/scripts/update-badge-data.py
@@ -1,5 +1,9 @@
 #!/usr/bin/env python3
-"""Schreibt .github/badges/data.json aus der Releases-API (OmniNX-Pack + NX_Firmware-Tag, Gitea/GitHub-kompatibel)."""
+"""Schreibt .github/badges/data.json aus der Releases-API (OmniNX-Pack + NX_Firmware-Tag, Gitea/GitHub-kompatibel).
+
+Download-Zähler: Summe aller *.zip-Assets (API). lifetime steigt nur bei current >= snapshot;
+bei Asset-Tausch (current < snapshot) wird lifetime nicht reduziert.
+"""
 
 from __future__ import annotations
 
@@ -90,14 +94,50 @@ def first_non_draft_tag(releases: list) -> str | None:
     return None
 
 
-def load_existing_firmware() -> str | None:
+def load_existing_badge_data() -> dict:
     if not os.path.isfile(BADGE_PATH):
-        return None
+        return {}
     try:
         with open(BADGE_PATH, encoding="utf-8") as f:
-            return json.load(f).get("switch_firmware")
+            data = json.load(f)
+            return data if isinstance(data, dict) else {}
     except (OSError, json.JSONDecodeError, TypeError):
+        return {}
+
+
+def load_existing_firmware() -> str | None:
+    fw = load_existing_badge_data().get("switch_firmware")
+    return str(fw).strip() if fw else None
+
+
+def _int_or_none(value: object) -> int | None:
+    if value is None:
         return None
+    try:
+        return int(value)
+    except (TypeError, ValueError):
+        return None
+
+
+def load_existing_download_counters() -> tuple[int | None, int | None]:
+    """Liest snapshot und lifetime; migriert alte release_zip_downloads_total."""
+    data = load_existing_badge_data()
+    snapshot = _int_or_none(data.get("release_zip_downloads_snapshot"))
+    if snapshot is None:
+        snapshot = _int_or_none(data.get("release_zip_downloads_total"))
+    lifetime = _int_or_none(data.get("release_zip_downloads_lifetime"))
+    if lifetime is None:
+        lifetime = _int_or_none(data.get("release_zip_downloads_total"))
+    return snapshot, lifetime
+
+
+def update_download_lifetime(current: int, snapshot: int | None, lifetime: int | None) -> tuple[int, int]:
+    """Gibt (neuer_snapshot, neue_lifetime) zurück."""
+    if snapshot is None or lifetime is None:
+        return current, current
+    if current >= snapshot:
+        lifetime += current - snapshot
+    return current, lifetime
 
 
 def main() -> int:
@@ -135,9 +175,15 @@ def main() -> int:
     if not fw:
         fw = load_existing_firmware() or "unknown"
 
+    current = sum_zip_downloads(omninx_releases)
+    prev_snapshot, prev_lifetime = load_existing_download_counters()
+    snapshot, lifetime = update_download_lifetime(current, prev_snapshot, prev_lifetime)
+
     data = {
         "switch_firmware": fw,
-        "release_zip_downloads_total": sum_zip_downloads(omninx_releases),
+        "release_zip_downloads_snapshot": snapshot,
+        "release_zip_downloads_lifetime": lifetime,
+        "release_zip_downloads_total": current,
         "omninx_pack_version": omninx_tag,
     }