diff --git a/INSTALL.md b/INSTALL.md
index 96f4d9d..608c4b8 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -5,15 +5,15 @@
 ## 1. 推荐：二进制安装（无需 Node）
 
 ```bash
-curl -fsSL https://bailian-wiki.oss-cn-hangzhou.aliyuncs.com/release/install.sh | bash
+curl -fsSL https://bailian.aliyun.com/install.sh | bash
 ```
 
-可选：`BAILIAN_CHANNEL`（默认 `latest`）、`BAILIAN_VERSION`（钉版本）、`BAILIAN_CLI_CDN`（覆盖 CDN 根）。
+可选：默认读 `manifest.json`（正式版）；`bash install.sh --channel sync-release` 读 channel 清单做验证；`--version` 钉版本；`--cdn` / `BAILIAN_CLI_CDN` 覆盖资源 CDN 根。
 
 Windows PowerShell：
 
 ```powershell
-irm https://bailian-wiki.oss-cn-hangzhou.aliyuncs.com/release/install.ps1 | iex
+irm https://bailian.aliyun.com/install.ps1 | iex
 ```
 
 校验：
diff --git a/README.md b/README.md
index 5d7fcd1..e1343fe 100644
--- a/README.md
+++ b/README.md
@@ -78,10 +78,10 @@ No timeline scrubbing. No frame-by-frame editing. Just one sentence → one vide
 
 ```bash
 # Recommended — no Node required
-curl -fsSL https://bailian-wiki.oss-cn-hangzhou.aliyuncs.com/release/install.sh | bash
+curl -fsSL https://bailian.aliyun.com/install.sh | bash
 
 # Windows (PowerShell)
-irm https://bailian-wiki.oss-cn-hangzhou.aliyuncs.com/release/install.ps1 | iex
+irm https://bailian.aliyun.com/install.ps1 | iex
 
 # Node users / developers (Node.js >= 18.17)
 npm install -g bailian-cli
diff --git a/README.zh.md b/README.zh.md
index 5ec6326..69eda4b 100644
--- a/README.zh.md
+++ b/README.zh.md
@@ -76,10 +76,10 @@ _专为 AI Agent 打造，每个命令均可作为结构化工具调用。_
 
 ```bash
 # 推荐 — 无需本机 Node.js
-curl -fsSL https://bailian-wiki.oss-cn-hangzhou.aliyuncs.com/release/install.sh | bash
+curl -fsSL https://bailian.aliyun.com/install.sh | bash
 
 # Windows（PowerShell）
-irm https://bailian-wiki.oss-cn-hangzhou.aliyuncs.com/release/install.ps1 | iex
+irm https://bailian.aliyun.com/install.ps1 | iex
 
 # Node 用户 / 开发者（需要 Node.js >= 18.17）
 npm install -g bailian-cli
diff --git a/packages/cli/README.md b/packages/cli/README.md
index 5d7fcd1..e1343fe 100644
--- a/packages/cli/README.md
+++ b/packages/cli/README.md
@@ -78,10 +78,10 @@ No timeline scrubbing. No frame-by-frame editing. Just one sentence → one vide
 
 ```bash
 # Recommended — no Node required
-curl -fsSL https://bailian-wiki.oss-cn-hangzhou.aliyuncs.com/release/install.sh | bash
+curl -fsSL https://bailian.aliyun.com/install.sh | bash
 
 # Windows (PowerShell)
-irm https://bailian-wiki.oss-cn-hangzhou.aliyuncs.com/release/install.ps1 | iex
+irm https://bailian.aliyun.com/install.ps1 | iex
 
 # Node users / developers (Node.js >= 18.17)
 npm install -g bailian-cli
diff --git a/packages/cli/README.zh.md b/packages/cli/README.zh.md
index 5ec6326..69eda4b 100644
--- a/packages/cli/README.zh.md
+++ b/packages/cli/README.zh.md
@@ -76,10 +76,10 @@ _专为 AI Agent 打造，每个命令均可作为结构化工具调用。_
 
 ```bash
 # 推荐 — 无需本机 Node.js
-curl -fsSL https://bailian-wiki.oss-cn-hangzhou.aliyuncs.com/release/install.sh | bash
+curl -fsSL https://bailian.aliyun.com/install.sh | bash
 
 # Windows（PowerShell）
-irm https://bailian-wiki.oss-cn-hangzhou.aliyuncs.com/release/install.ps1 | iex
+irm https://bailian.aliyun.com/install.ps1 | iex
 
 # Node 用户 / 开发者（需要 Node.js >= 18.17）
 npm install -g bailian-cli
diff --git a/packages/core/src/install/cdn.ts b/packages/core/src/install/cdn.ts
index 8460a1e..a25dd1b 100644
--- a/packages/core/src/install/cdn.ts
+++ b/packages/core/src/install/cdn.ts
@@ -5,9 +5,9 @@
  *
  * Layout under the base:
  *   v<version>/<asset>.zip —— immutable per-version binaries + SHA256SUMS
- *   manifest.json          —— stable pointer; same rolling-manifest shape as latest.json
- *   latest.json            —— stable rolling manifest (os-arch keyed, sha256)
- *   <channel>.json         —— per-channel rolling manifests (beta versions)
+ *   manifest.json          —— stable install/update pointer (rolling-manifest shape)
+ *   latest.json            —— stable alias; same body as manifest.json
+ *   <channel>.json         —— per-channel rolling manifests (betas / local verify)
  *
  * Override with `BAILIAN_CLI_CDN`.
  */
@@ -16,8 +16,9 @@ export const DEFAULT_CLI_CDN_BASE = "https://bailian-wiki.oss-cn-hangzhou.aliyun
 /** GitHub Releases base — used when writing manifests attached to gh release assets. */
 export const GITHUB_RELEASES_BASE = "https://github.com/modelstudioai/cli/releases";
 
-export const DEFAULT_INSTALL_SCRIPT_URL = `${DEFAULT_CLI_CDN_BASE}/install.sh`;
-export const DEFAULT_INSTALL_PS1_URL = `${DEFAULT_CLI_CDN_BASE}/install.ps1`;
+/** User-facing install entry (docs / update hints); asset downloads still use getCliCdnBase(). */
+export const DEFAULT_INSTALL_SCRIPT_URL = "https://bailian.aliyun.com/install.sh";
+export const DEFAULT_INSTALL_PS1_URL = "https://bailian.aliyun.com/install.ps1";
 
 export function getCliCdnBase(): string {
   const fromEnv = process.env.BAILIAN_CLI_CDN?.trim();
@@ -26,12 +27,17 @@ export function getCliCdnBase(): string {
 }
 
 /**
- * Rolling channel manifest at the CDN base root: `{base}/{channel}.json`.
- * `latest.json` (stable) and `<channel>.json` (betas) share the same shape;
- * both are written by CI on publish.
+ * Rolling manifest URL at the CDN base root.
+ * Stable (`latest` / `stable` / empty) → `manifest.json`.
+ * Named channel → `{channel}.json` (e.g. sync-release for local verify).
+ * All share the same rolling-manifest shape from binary-build.
  */
 export function channelManifestUrl(channel = "latest"): string {
-  return `${getCliCdnBase()}/${channel}.json`;
+  const normalized = channel.trim();
+  if (!normalized || normalized === "latest" || normalized === "stable") {
+    return `${getCliCdnBase()}/manifest.json`;
+  }
+  return `${getCliCdnBase()}/${normalized}.json`;
 }
 
 /** Immutable per-version asset: `{base}/v{version}/{fileName}`. */
diff --git a/packages/core/tests/install-method.test.ts b/packages/core/tests/install-method.test.ts
index e4aa557..2c1f085 100644
--- a/packages/core/tests/install-method.test.ts
+++ b/packages/core/tests/install-method.test.ts
@@ -33,3 +33,20 @@ test("binaryInnerFileName keeps exe suffix inside zip", () => {
   expect(binaryInnerFileName("1.2.3", "windows", "x64", true)).toBe("bl-1.2.3-windows-x64.exe");
   expect(binaryInnerFileName("1.2.3", "darwin", "arm64", false)).toBe("bl-1.2.3-darwin-arm64");
 });
+
+test("channelManifestUrl maps stable to manifest.json", async () => {
+  const { channelManifestUrl } = await import("../src/install/cdn.ts");
+  const previous = process.env.BAILIAN_CLI_CDN;
+  delete process.env.BAILIAN_CLI_CDN;
+  expect(channelManifestUrl()).toBe(
+    "https://bailian-wiki.oss-cn-hangzhou.aliyuncs.com/release/manifest.json",
+  );
+  expect(channelManifestUrl("latest")).toBe(
+    "https://bailian-wiki.oss-cn-hangzhou.aliyuncs.com/release/manifest.json",
+  );
+  expect(channelManifestUrl("sync-release")).toBe(
+    "https://bailian-wiki.oss-cn-hangzhou.aliyuncs.com/release/sync-release.json",
+  );
+  if (previous === undefined) delete process.env.BAILIAN_CLI_CDN;
+  else process.env.BAILIAN_CLI_CDN = previous;
+});
diff --git a/packaging/install.ps1 b/packaging/install.ps1
index e18c4d4..2dcd270 100644
--- a/packaging/install.ps1
+++ b/packaging/install.ps1
@@ -1,19 +1,18 @@
-# Binary install script for the OSS release layout (see packages/core/src/install/cdn.ts).
+# Binary install script for the OSS release
 #
-#   irm https://bailian-wiki.oss-cn-hangzhou.aliyuncs.com/release/install.ps1 | iex
-#   $env:BAILIAN_CHANNEL = "sync-release"; irm ... | iex
-#   $env:BAILIAN_VERSION = "1.10.1"; irm ... | iex
+#   irm https://bailian.aliyun.com/install.ps1 | iex
+#   .\install.ps1 -Channel sync-release          # local / channel verify
+#   .\install.ps1 -Version 1.10.1
 #
-# Layout:
-#   {CDN}/{channel}.json              — rolling manifest (version + assets)
-#   {CDN}/v{version}/{file}.zip       — per-platform zip
-param()
+param(
+  [string]$Channel = $env:BAILIAN_CHANNEL,
+  [string]$Version = $env:BAILIAN_VERSION,
+  [string]$Cdn = $env:BAILIAN_CLI_CDN
+)
 
 $ErrorActionPreference = "Stop"
 
-$CdnBase = if ($env:BAILIAN_CLI_CDN) { $env:BAILIAN_CLI_CDN.TrimEnd("/") } else { "https://bailian-wiki.oss-cn-hangzhou.aliyuncs.com/release" }
-$Channel = if ($env:BAILIAN_CHANNEL) { $env:BAILIAN_CHANNEL } else { "latest" }
-$Version = $env:BAILIAN_VERSION
+$CdnBase = if ($Cdn) { $Cdn.TrimEnd("/") } else { "https://bailian-wiki.oss-cn-hangzhou.aliyuncs.com/release" }
 $InstallRoot = if ($env:BAILIAN_SHARE_DIR) { $env:BAILIAN_SHARE_DIR } else { Join-Path $env:LOCALAPPDATA "bailian-cli" }
 $ConfigDir = if ($env:BAILIAN_CONFIG_DIR) { $env:BAILIAN_CONFIG_DIR } else { Join-Path $env:USERPROFILE ".bailian" }
 
@@ -32,7 +31,13 @@ if ($Arch -eq "arm64") {
 }
 $PlatformKey = "windows-$Arch"
 
-$ManifestUrl = "$CdnBase/$Channel.json"
+if (-not [string]::IsNullOrWhiteSpace($Channel) -and $Channel -ne "latest" -and $Channel -ne "stable") {
+  $ManifestLabel = "$Channel.json"
+  $ManifestUrl = "$CdnBase/$Channel.json"
+} else {
+  $ManifestLabel = "manifest.json"
+  $ManifestUrl = "$CdnBase/manifest.json"
+}
 Write-Log "Fetching $ManifestUrl"
 $Manifest = Invoke-RestMethod -Uri $ManifestUrl
 
@@ -41,7 +46,7 @@ if ([string]::IsNullOrWhiteSpace($Version)) {
   $Version = $Manifest.version
 }
 if ([string]::IsNullOrWhiteSpace($Version)) {
-  throw "Could not parse version from $Channel channel manifest"
+  throw "Could not parse version from $ManifestLabel"
 }
 
 $ZipFile = $null
@@ -126,7 +131,7 @@ try {
     Write-Log "Added $ShimDir to your user PATH. Open a new terminal to use bl."
   }
 
-  Write-Log "Installed: $Target (bailian-cli $Version) [$Channel]"
+  Write-Log "Installed: $Target (bailian-cli $Version) [$ManifestLabel]"
   Write-Log "Done. Run: bl --help"
 }
 finally {
diff --git a/packaging/install.sh b/packaging/install.sh
index f0e98ff..5f47a45 100755
--- a/packaging/install.sh
+++ b/packaging/install.sh
@@ -1,19 +1,16 @@
 #!/usr/bin/env bash
-# Binary install script for the OSS release layout (see packages/core/src/install/cdn.ts).
+# Binary install script for the OSS release
 #
-#   curl -fsSL https://bailian-wiki.oss-cn-hangzhou.aliyuncs.com/release/install.sh | bash
-#   BAILIAN_CHANNEL=latest bash install.sh
-#   BAILIAN_CHANNEL=sync-release bash install.sh
-#   BAILIAN_VERSION=1.10.1 bash install.sh
+#   curl -fsSL https://bailian.aliyun.com/install.sh | bash
+#   bash install.sh --channel sync-release          # local / channel verify
+#   bash install.sh --version 1.10.1
+#   curl -fsSL …/install.sh | bash -s -- --channel sync-release
 #
-# Layout:
-#   {CDN}/{channel}.json              —— rolling manifest (version + assets)
-#   {CDN}/v{version}/{file}.zip       —— per-platform zip
 set -euo pipefail
 
 CDN_BASE="${BAILIAN_CLI_CDN:-https://bailian-wiki.oss-cn-hangzhou.aliyuncs.com/release}"
 CDN_BASE="${CDN_BASE%/}"
-CHANNEL="${BAILIAN_CHANNEL:-latest}"
+CHANNEL="${BAILIAN_CHANNEL:-}"
 VERSION="${BAILIAN_VERSION:-}"
 BIN_DIR="${BAILIAN_BIN_DIR:-${HOME}/.local/bin}"
 SHARE_DIR="${BAILIAN_SHARE_DIR:-${HOME}/.local/share/bailian-cli}"
@@ -22,10 +19,61 @@ CONFIG_DIR="${BAILIAN_CONFIG_DIR:-${HOME}/.bailian}"
 ZIP_FILE=""
 ZIP_SHA256=""
 INNER_NAME=""
+MANIFEST_LABEL="manifest.json"
 
 log() { printf '%s\n' "$*" >&2; }
 die() { log "error: $*"; exit 1; }
 
+usage() {
+  cat >&2 <<'EOF'
+Usage: install.sh [--channel <name>] [--version <ver>] [--cdn <url>] [--help]
+
+  --channel <name>   Install from {CDN}/{name}.json (default: manifest.json)
+  --version <ver>    Pin a release version (checksum via SHA256SUMS if needed)
+  --cdn <url>        Override CDN base (default / BAILIAN_CLI_CDN)
+  --help             Show this help
+
+Env fallbacks: BAILIAN_CHANNEL, BAILIAN_VERSION, BAILIAN_CLI_CDN,
+               BAILIAN_BIN_DIR, BAILIAN_SHARE_DIR, BAILIAN_CONFIG_DIR
+EOF
+}
+
+parse_args() {
+  while [[ $# -gt 0 ]]; do
+    case "$1" in
+      --channel|-c)
+        [[ $# -ge 2 ]] || die "$1 requires a value"
+        CHANNEL="$2"
+        shift 2
+        ;;
+      --version)
+        [[ $# -ge 2 ]] || die "$1 requires a value"
+        VERSION="$2"
+        shift 2
+        ;;
+      --cdn)
+        [[ $# -ge 2 ]] || die "$1 requires a value"
+        CDN_BASE="${2%/}"
+        shift 2
+        ;;
+      --help|-h)
+        usage
+        exit 0
+        ;;
+      --)
+        shift
+        break
+        ;;
+      -*)
+        die "unknown option: $1 (try --help)"
+        ;;
+      *)
+        die "unexpected argument: $1 (try --help)"
+        ;;
+    esac
+  done
+}
+
 need_cmd() {
   command -v "$1" >/dev/null 2>&1 || die "required command not found: $1"
 }
@@ -141,7 +189,13 @@ resolve_asset() {
   need_cmd curl
   local manifest_path parsed manifest_url
   manifest_path="$(mktemp)"
-  manifest_url="${CDN_BASE}/${CHANNEL}.json"
+  if [[ -n "${CHANNEL}" && "${CHANNEL}" != "latest" && "${CHANNEL}" != "stable" ]]; then
+    MANIFEST_LABEL="${CHANNEL}.json"
+    manifest_url="${CDN_BASE}/${CHANNEL}.json"
+  else
+    MANIFEST_LABEL="manifest.json"
+    manifest_url="${CDN_BASE}/manifest.json"
+  fi
   log "Fetching ${manifest_url}"
   if ! curl -fsSL "${manifest_url}" -o "${manifest_path}"; then
     rm -f "${manifest_path}"
@@ -150,7 +204,7 @@ resolve_asset() {
 
   if ! parsed="$(parse_manifest_asset "${manifest_path}" "${PLATFORM_KEY}" "${VERSION}")"; then
     rm -f "${manifest_path}"
-    die "failed to parse asset metadata from ${CHANNEL}.json for ${PLATFORM_KEY}"
+    die "failed to parse asset metadata from ${MANIFEST_LABEL} for ${PLATFORM_KEY}"
   fi
   rm -f "${manifest_path}"
 
@@ -160,7 +214,7 @@ resolve_asset() {
   INNER_NAME="$(printf '%s\n' "${parsed}" | cut -f4)"
 
   [[ -n "${VERSION}" && -n "${ZIP_FILE}" && -n "${INNER_NAME}" ]] \
-    || die "incomplete asset metadata from ${CHANNEL}.json"
+    || die "incomplete asset metadata from ${MANIFEST_LABEL}"
 }
 
 sha256_file() {
@@ -253,11 +307,12 @@ warn_npm_conflict() {
 }
 
 main() {
+  parse_args "$@"
   need_cmd curl
   need_cmd uname
   detect_os_arch
   resolve_asset
-  log "Installing bailian-cli ${VERSION} (${PLATFORM_KEY}) from ${CDN_BASE} [${CHANNEL}]"
+  log "Installing bailian-cli ${VERSION} (${PLATFORM_KEY}) from ${CDN_BASE} [${MANIFEST_LABEL}]"
   download_and_install
   warn_npm_conflict
   warn_path