diff --git a/ota/gen-manifest.sh b/ota/gen-manifest.sh
index 792d600..4244fe7 100644
--- a/ota/gen-manifest.sh
+++ b/ota/gen-manifest.sh
@@ -1 +1,54 @@
-#
+#!/bin/bash
+# gen-manifest.sh — 生成 APK 发行版 manifest
+# 在 Android Studio 构建 Release APK 后运行
+# 用法: bash gen-manifest.sh 6 stable
+#       bash gen-manifest.sh 6 all
+
+set -e
+
+VER="$1"
+shift
+CHANNELS=("$@")
+
+if [ -z "$VER" ] || [ ${#CHANNELS[@]} -eq 0 ]; then
+  echo "用法: $0 <构建号> <渠道...>"
+  echo "示例: $0 6 stable beta nightly"
+  exit 1
+fi
+
+OTA_DIR="$(dirname "$0")"
+APK_PATH="$OTA_DIR/../packages/client-android/android/app/build/outputs/apk/debug/v0.1.0-dav-android-${VER}-debug.apk"
+BASE="https://git.childish-ghost.com/LukeMackin/Yuzu-GCA"
+TAG="v0.1.0-dav-android-${VER}"
+APK_NAME="v0.1.0-dav-android-${VER}-debug.apk"
+DL_URL="${BASE}/releases/download/${TAG}/${APK_NAME}"
+
+if [ ! -f "$APK_PATH" ]; then
+  echo "APK not found: $APK_PATH"
+  exit 1
+fi
+
+SHA256=$(sha256sum "$APK_PATH" | cut -d' ' -f1)
+echo "APK  : $APK_PATH"
+echo "SHA256: $SHA256"
+
+for CH in "${CHANNELS[@]}"; do
+  if [ "$CH" = "all" ]; then
+    for CH in stable beta nightly; do
+      cat > "$OTA_DIR/manifest-${CH}.json" <<EOF
+{"version":"0.1.0-dav-android-${VER}","versionCode":${VER},"url":"${DL_URL}","sha256":"${SHA256}"}
+EOF
+      echo "  ✓ manifest-${CH}.json"
+    done
+    break
+  fi
+  cat > "$OTA_DIR/manifest-${CH}.json" <<EOF
+{"version":"0.1.0-dav-android-${VER}","versionCode":${VER},"url":"${DL_URL}","sha256":"${SHA256}"}
+EOF
+  echo "  ✓ manifest-${CH}.json"
+done
+
+echo ""
+echo "Next: git tag $TAG && git push --tags"
+echo "      Gitea Release → upload APK"
+echo "      bash push-hotfix.sh $VER stable  # H5同步"