Android SDK Platform Tools

Delete openscreen backend. The environment variable ADB_MDNS_OPENSCREEN no longer has any effect. The only mDNS backend is libadbmdns. Add trace level. ADB_TRACE format now accepts a log level (for example: usb:v, services:w). Linux: Improve USB hotplug system. Rely on udev netlink events instead of kernel to avoid race conditions with udev. Add blame for the kill-server command. The adb server will print out the process command line chain which requested its termination. Windows: Improve mDNS backend. Load wlanapi.dll lazily to allow adb to run on Windows Server that doesn't include wlanapi.dll. Introduce libadbusb to replace libusb. libadbusb can be disabled by setting the ADB_USB_LEGACY environment variable to 1. MacOS: Disable libusb. Use legacy USB backend instead. libusb can be enabled by setting the ADB_LIBUSB environment variable to 1.

The default mDNS backend is now libadbmdns. Library openscreen is still included as a failover but is deprecated. Libadbmdns now also return .local hostname as part of services metadata. Linux USB backend now uses netlink instead of an active loop to detect devices addition/deletion.

Make legacy USB backend the default on Linux (instead of libusb) due to instability reports (device disconnection, interface read failure, and delayed netlink events preventing device detection). Fix bug where Samsung devices were not properly detected issue #404741058. Fix bug where old Android devices using USB class Miscellaneous (0xEF) were not properly detected issue #365009755. Fix bug where last character of a file was truncated when pulled or pushed [Windows only] issue #439152273.

Re-written libusb USB backend (uses sync API instead of async API). Improves reliability and fixes memory exhaustion on Linux. Libusb USB backend hot-plug now supports for Windows (enables USB speed detection). Improved server-status now displays if mdns is enabled. Fixed macOS bug where zero-length packets were not sent, resulting in stalled connection issue #208675141. Fixed use-after-free in libusb backend.

Fix openscreen mDNS backend bug bringing down server on truncated query issue #294120933. Make openscreen mDNS backend work on macOS. Make openscreen mDNS backend default on all platforms. Support to detect USB SuperSpeed+ (current and negotiated speeds) for diagnostic purposes. Graceful shutdown: Release all USB interfaces on shutdown (all OSes).

Switch to libusb as the default on Linux issue #270205252. Fix adb startup on hosts without USB. Fix adb hangs caused by USB devices incorrectly reporting zero-length descriptors issue #302212871. Fix return code of adb shell when device disconnects issue #321787891. Limit the maximum size of the incoming packet queue. Remove bottlenecks that previously limited download speeds to around 120MB/s. Now fastboot can saturate a SuperSpeed+ bus and achieve speeds up to 980MB/s, depending on the device.

adb now defaults to libusb on macOS to address issue #270205252. Previously, adb responded with a successful code when wireless pairing fails. Resolved this by returning a failure code (1) and user-facing error ( error: protocol fault (couldn't read status message...)). echo $? now reports 1. adb wait-for-disconnect is now operational for non-USB (wireless debugging). Added new DbC interface for future support of ChromeOS over adb. Fixed flashall on Pixel 3 devices.

Propagate -a (gListenAll) when adb forks an adb host server (previously, the flag only worked for adb -a server nodaemon) Faster root and unroot Reland Flag(env) guarding clear endpoint (device) feature for OSX usb start. ( issue #270205252). Mac: remove retries on invalid IO iterator (flashing failure with LIBUSB_TRANSFER_CANCELLED) Windows: fix "Sparse file is too large or invalid" when using "flashall" All platforms: fix "ANDROID_PRODUCT_OUT not set" when using "update"

macOS: Reverted "unstable connectivity (MacBook high speed cable)" resolution due to adb install hang ( issue #270205252). Windows: Fixed "mke2fs: Illegal or malformed device name while trying to determine filesystem size" error introduced in Platform tools 34.0.0 ( issue #271039230).

Fixed zero length packet sends for macOS (issuetracker: 208675141). Addressed unstable connectivity (MacBook high speed cable): frequent adb disconnects. Improved error message for adb push with insufficient number of arguments. Improved flashing: flashall will now skip reboots to userspace if it can. Fixed zero length packet sends for macOS (issuetracker: 208675141). Fixed flashing recovery.img resulting in wrong AVB footer.

Don't retry adb root if first attempt failed. Fix track-devices duplicate entry. Add receive windowing (increase throughput on high-latency connections). More specific error messages in the "more than one device" failure cases. Reject unexpected reverse forward requests. Fix install-multi-package on Windows. Remove e2fsdroid as part of SDK platform-tools. Print OemCmdHandler return message on success.

Fixes Windows mdns crashes. Fixes enable-verity/disable-verity on old devices. Fixes "install multiple" on old devices Improves the help output to include all supported compression methods. Removed. Use Studio Profiler/gpuinspector.dev/Perfetto instead.

Universal binary for Apple M1 devices. Known issue: this version crashes when run without any arguments.

Support forwarding to vsock on linux. Fix bug in adb track-devices where devices over wireless debugging wouldn't immediately receive updates. Implement preliminary support for mDNS device discovery without a separately installed mDNS service. This is currently disabled by default, and can be enabled by setting the environment variable ADB_MDNS_OPENSCREEN to 1 when starting the adb server. Don't fail when unable to get boot partition size. Derive device locked state from property instead of parsing the kernel command line.

Reduce TCP keepalive interval. Improve incremental installation performance. Add support for compressed snapshot merges. Restore legacy A/B support.

Improve performance of adb push when pushing many files over a high-latency connection. Improve adb push/pull performance on Windows. Fix adb push --sync with multiple inputs. Improve performance of incremental apk installation. Improve error handling for incremental apk installation.

Fix fallback to non-incremental apk installation on pre-Android 11 devices. Fix adb install-multi-package. Fix some more crashes related to adb wireless pairing. Improve some error messages. Improve console output on fastboot oem commands. Fix fastboot flashall on older devices such as Nexus 7.

Fix installation of APKs signed with v4 signature scheme on pre-Android 11 devices. Fix crash when authenticating without ADB_VENDOR_KEYS. Fix crash when using adb -H.

Improve adb wireless pairing. Fix hang in adb logcat when run before a device is connected. Add adb transport-id to allow scripts to safely wait for a device to go away after root/unroot/reboot.

Disable adb mdns auto-connection by default. This can be reenabled with the ADB_MDNS_AUTO_CONNECT environment variable. Improve performance of adb install-multi on Android 10 or newer devices. Fix timeout when using adb root/unroot on a device connected over TCP. Update support for wireless pairing.

Add initial support for wireless pairing. Add support for incremental APK installation. Implement client-side support for compression of adb {push, pull, sync} when used with an Android 11 device. Improve performance of adb push on high-latency connections. Improve push/pull performance on Windows.

64-bit size/time support for adb ls when used with an Android 11 device. Support listening on ::1 on POSIX. Client support for WinUSB devices that publish a WinUSB descriptor (required for Android 11) should no longer require a USB driver to be installed. Fix hang when using adb install on something that isn't actually a file.

Slight performance improvement on Linux when using many simultaneous connections. Add --fastdeploy option to adb install, for incremental updates to APKs while developing.

adb forward --list works with multiple devices connected. Fix devices going offline on Windows. Improve adb install output and help text. Restore previous behavior of adb connect without specifying port.

Hotfix for native debugging timeout with LLDB (see issue #134613180). This also fixes a related bug in the Android Studio Profilers that causes an AdbCommandRejectedException, which you can see in the idea.log file.

Fixes a Windows heap integrity crash. Adds support for partition layout of upcoming devices.

adb reconnect performs a USB reset on Linux. On Linux, when connecting to a newer adb server, instead of killing the server and starting an older one, adb attempts to launch the newer version transparently. adb root waits for the device to reconnect after disconnecting. Previously, adb root; adb wait-for-device could mistakenly return immediately if adb wait-for-device started before adb noticed that the device had disconnected. Disables an error message that occurred when fastboot attempted to open the touch bar or keyboard on macOS.

Fixes flakiness of adb shell port forwarding that leads to "Connection reset by peer" error message. Fixes authentication via ADB_VENDOR_KEYS when reconnecting devices. Fixes authentication—when the private key used for authentication does not match the public key—by calculating the public key from the private key, instead of assuming that they match. Adds support for dynamic partitions.

Add support for reconnection of TCP connections. Upon disconnection, adb will attempt to reconnect for up to 60 seconds before abandoning a connection. Fix Unicode console output on Windows. (Thanks to external contributor Spencer Low!) Fix a file descriptor double-close that can occur, resulting in connections being closed when an adb connect happens simultaneously. Fix adb forward --list when used with more than one device connected. Increase command timeout to 30 seconds, to better support some slow bootloader commands.

Add support for checksum-less operation with devices running Android P, which improves throughput by up to 40%. Sort output of adb devices by connection type and device serial. Increase the socket listen backlog to allow for more simultaneous adb commands. Improve error output for adb connect. Improve output format, add a verbose output mode ( -v). Clean up help output. Add product.img and odm.img to the list of partitions flashed by fastboot flashall. Avoid bricking new devices when using a too-old version of fastboot by allowing factory image packages to require support for specific partitions.

adb: fixes an assertion failure on MacOS that occurred when connecting devices using USB 3.0. Fastboot: On Windows, adds support for wiping devices that use F2FS (Flash-Friendly File System).

Re-fixes the macOS 10.13 fastboot bug first fixed in 26.0.1, but re-introduced in 26.0.2.

Fixed adb sideload of large updates on Windows, manifesting as "std::bad_alloc" ( bug 37139736). Fixed adb problems with some Windows firewalls, manifesting as "cannot open transport registration socketpair" ( bug 37139725). Both adb --version and fastboot --version now include the install path. Changed adb to not resolve localhost to work around misconfigured VPN. Changed adb to no longer reset USB devices on Linux, which could affect other attached USB devices.

Added experimental libusb support to Linux and Mac adb To use the libusb backend, set the environment variable ADB_LIBUSB=true before launching a new adb server. The new adb host-features command will tell you whether or not you're using libusb. To restart adb with libusb and check that it worked, use adb kill-server; ADB_LIBUSB=1 adb start-server; adb host-features. The output should include "libusb". In this release, the old non-libusb implementation remains the default. fastboot doesn't hang 2016 MacBook Pros anymore ( bug 231129) Fixed Systrace command line capture on Mac