diff --git a/libraries/adb-scrcpy/src/connection.ts b/libraries/adb-scrcpy/src/connection.ts
index e0ce5dc6..e49cc3c9 100644
--- a/libraries/adb-scrcpy/src/connection.ts
+++ b/libraries/adb-scrcpy/src/connection.ts
@@ -114,21 +114,21 @@ export class AdbScrcpyForwardConnection extends AdbScrcpyConnection {
         const streams: AdbScrcpyConnectionStreams = {};
 
         if (this.options.video) {
-            const video = await this.#connectAndRetry(sendDummyByte);
-            streams.video = video.readable;
+            const stream = await this.#connectAndRetry(sendDummyByte);
+            streams.video = stream.readable;
             sendDummyByte = false;
         }
 
         if (this.options.audio) {
-            const audio = await this.#connectAndRetry(sendDummyByte);
-            streams.audio = audio.readable;
+            const stream = await this.#connectAndRetry(sendDummyByte);
+            streams.audio = stream.readable;
             sendDummyByte = false;
         }
 
         if (this.options.control) {
-            const control = await this.#connectAndRetry(sendDummyByte);
+            const stream = await this.#connectAndRetry(sendDummyByte);
+            streams.control = stream;
             sendDummyByte = false;
-            streams.control = control;
         }
 
         return streams;
@@ -180,18 +180,18 @@ export class AdbScrcpyReverseConnection extends AdbScrcpyConnection {
         const streams: AdbScrcpyConnectionStreams = {};
 
         if (this.options.video) {
-            const video = await this.#accept();
-            streams.video = video.readable;
+            const stream = await this.#accept();
+            streams.video = stream.readable;
         }
 
         if (this.options.audio) {
-            const audio = await this.#accept();
-            streams.audio = audio.readable;
+            const stream = await this.#accept();
+            streams.audio = stream.readable;
         }
 
         if (this.options.control) {
-            const control = await this.#accept();
-            streams.control = control;
+            const stream = await this.#accept();
+            streams.control = stream;
         }
 
         return streams;
diff --git a/libraries/adb/src/daemon/dispatcher.ts b/libraries/adb/src/daemon/dispatcher.ts
index 15954d86..38848c28 100644
--- a/libraries/adb/src/daemon/dispatcher.ts
+++ b/libraries/adb/src/daemon/dispatcher.ts
@@ -28,6 +28,10 @@ export interface AdbPacketDispatcherOptions {
      */
     appendNullToServiceString: boolean;
     maxPayloadSize: number;
+    /**
+     * Whether to preserve the connection open after the `AdbPacketDispatcher` is closed.
+     */
+    preserveConnection?: boolean | undefined;
 }
 
 /**
@@ -114,12 +118,7 @@ export class AdbPacketDispatcher implements Closeable {
                     },
                 }),
                 {
-                    // There are multiple reasons for the pipe to stop,
-                    // (device disconnection, protocol error, or user abortion)
-                    // if the underlying streams are still open,
-                    // it's still possible to create another ADB connection.
-                    // So don't close `readable` here.
-                    preventCancel: true,
+                    preventCancel: options.preserveConnection ?? false,
                     signal: this.#readAbortController.signal,
                 },
             )
diff --git a/libraries/adb/src/daemon/transport.ts b/libraries/adb/src/daemon/transport.ts
index 14d41ab1..bf9869d3 100644
--- a/libraries/adb/src/daemon/transport.ts
+++ b/libraries/adb/src/daemon/transport.ts
@@ -32,6 +32,10 @@ interface AdbDaemonAuthenticationOptions {
     connection: ReadableWritablePair<AdbPacketData, Consumable<AdbPacketInit>>;
     credentialStore: AdbCredentialStore;
     authenticators?: AdbAuthenticator[];
+    /**
+     * Whether to preserve the connection open after the `AdbDaemonTransport` is closed.
+     */
+    preserveConnection?: boolean | undefined;
 }
 
 interface AdbDaemonSocketConnectorConstructionOptions {
@@ -40,6 +44,10 @@ interface AdbDaemonSocketConnectorConstructionOptions {
     version: number;
     maxPayloadSize: number;
     banner: string;
+    /**
+     * Whether to preserve the connection open after the `AdbDaemonTransport` is closed.
+     */
+    preserveConnection?: boolean | undefined;
 }
 
 export class AdbDaemonTransport implements AdbTransport {
@@ -56,6 +64,7 @@ export class AdbDaemonTransport implements AdbTransport {
         connection,
         credentialStore,
         authenticators = ADB_DEFAULT_AUTHENTICATORS,
+        preserveConnection,
     }: AdbDaemonAuthenticationOptions): Promise<AdbDaemonTransport> {
         // Initially, set to highest-supported version and payload size.
         let version = 0x01000001;
@@ -180,6 +189,7 @@ export class AdbDaemonTransport implements AdbTransport {
             version,
             maxPayloadSize,
             banner,
+            preserveConnection,
         });
     }
 
@@ -215,6 +225,7 @@ export class AdbDaemonTransport implements AdbTransport {
         version,
         maxPayloadSize,
         banner,
+        preserveConnection,
     }: AdbDaemonSocketConnectorConstructionOptions) {
         this.#serial = serial;
         this.#banner = AdbBanner.parse(banner);
@@ -233,6 +244,7 @@ export class AdbDaemonTransport implements AdbTransport {
             calculateChecksum,
             appendNullToServiceString,
             maxPayloadSize,
+            preserveConnection,
         });
 
         this.#protocolVersion = version;
diff --git a/libraries/android-bin/src/bu.ts b/libraries/android-bin/src/bu.ts
index 0110b170..c6982b74 100644
--- a/libraries/android-bin/src/bu.ts
+++ b/libraries/android-bin/src/bu.ts
@@ -1,5 +1,6 @@
 import { AdbCommandBase } from "@yume-chan/adb";
 import type { Consumable, ReadableStream } from "@yume-chan/stream-extra";
+import { ConcatStringStream, DecodeUtf8Stream } from "@yume-chan/stream-extra";
 
 export interface AdbBackupOptions {
     user: number;
@@ -62,13 +63,18 @@ export class AdbBackup extends AdbCommandBase {
      * User must enter the password (if any) and
      * confirm restore on device within 60 seconds.
      */
-    async restore(options: AdbRestoreOptions): Promise<void> {
+    async restore(options: AdbRestoreOptions): Promise<string> {
         const args = ["bu", "restore"];
         if (options.user !== undefined) {
             args.push("--user", options.user.toString());
         }
         const process = await this.adb.subprocess.spawn(args);
-        await options.file.pipeTo(process.stdin);
-        await process.exit;
+        const [output] = await Promise.all([
+            process.stdout
+                .pipeThrough(new DecodeUtf8Stream())
+                .pipeThrough(new ConcatStringStream()),
+            options.file.pipeTo(process.stdin),
+        ]);
+        return output;
     }
 }