Fastboot

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Fastboot
[[Programmer|Original authorTemplate:Pluralize from text]]Google LLC
Template:Infobox software/simple
Included withAndroid SDK
Available inC++
TypeFirmware communication protocol and implementation thereof
WebsiteScript error: No such module "WikidataIB".
Repositoryandroid.googlesource.com

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Fastboot is a communication protocol used primarily with Android devices.[1] It is implemented in a command-line interface tool of the same name and as a mode of the bootloader of Android devices. The tool is included with the Android SDK package and used primarily to modify the flash filesystem via a USB connection from a host computer. It requires that the device be started in Fastboot mode. If the mode is enabled, it will accept a specific set of commands,[2] sent through USB bulk transfers. Fastboot on some devices allows unlocking the bootloader, and subsequently, enables installing custom recovery image and custom ROM on the device. Fastboot does not require USB debugging to be enabled on the device.[3] To use fastboot, a specific combination of keys must be held during boot.[4]

Not all Android devices have fastboot enabled,[5] and Android device manufacturers are allowed to choose if they want to implement fastboot or some other protocol.[6]

Keys pressed

The keys that have to be pressed for fastboot differ for various vendors.[7]

  • HTC, Google Pixel, Motorola, and Xiaomi: Power and volume down
  • Zebra and symbol devices: Right scan/action button
  • Sony: Power and volume up
  • Google Nexus: Power, volume up and volume down

On Samsung devices, (excluding the Nexus S and Galaxy Nexus devices), power, volume down and home has to be pressed for entering ODIN mode. This is a proprietary protocol, and tool, as an alternative to fastboot. The tool has a partial alternative.

Commands

Some of the most commonly used fastboot commands include:

  • flash – rewrites a partition with a binary image stored on the host computer.
  • flashing unlock/oem unlock DEVICE_SPECIFIC_UNLOCK_KEY – unlocks an OEM locked bootloader for flashing custom/unsigned ROMs.
  • flashing lock/oem lock DEVICE_SPECIFIC_LOCK_KEY – locks an OEM unlocked bootloader.
  • erase – erases a specific partition.
  • reboot – reboots the device into either the main operating system, the system recovery partition or back into its boot loader.
  • devices – displays a list of all devices (with the serial number) connected to the host computer.
  • format – formats a specific partition; the file system of the partition must be recognized by the device.
  • oem device-info – checks the bootloader state.
  • getvar all – displays all information about device (IMEI, bootloader version, battery state etc.).

Implementations

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The fastboot protocol has been implemented in the Android bootloader called ABOOT,[8] the Little Kernel fork of Qualcomm,[9] TianoCore EDK II,[10][11] and Das U-Boot.[12]

See also

References

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  1. ^ Page Module:Citation/CS1/styles.css has no content."Fastboot Protocol Documentation". android.googlesource.com. Retrieved 2019-07-07.
  2. ^ Page Module:Citation/CS1/styles.css has no content.Ravenscraft, Eric (2014-06-13). "The Most Useful Things You Can Do with ADB and Fastboot on Android". Lifehacker. Retrieved 2019-07-07.
  3. ^ Page Module:Citation/CS1/styles.css has no content.Tamma, Rohit (2015). Learning Android forensics : a hands-on guide to Android forensics, from setting up the forensic workstation to analyzing key forensic artifacts. Donnie Tindall. Birmingham, UK. p. 113. ISBN 978-1-78217-444-8. OCLC 910639389.{{cite book}}: CS1 maint: location missing publisher (link)
  4. ^ Page Module:Citation/CS1/styles.css has no content."How to Use ADB and Fastboot on Android (And Why You Should)". Makeuseof. 2017-01-26. Retrieved 2021-08-04.
  5. ^ Page Module:Citation/CS1/styles.css has no content."The Easiest Way to Install Android's ADB and Fastboot Tools on Any OS". Lifehacker. 11 January 2017. Retrieved 2021-08-04.
  6. ^ Page Module:Citation/CS1/styles.css has no content.Drake, Joshua J. (2014). Android hacker's handbook. Zach Lanier, Collin Mulliner, Pau Oliva, Stephen A. Ridley, Georg Wicherski. Indianapolis, IN: Wiley. ISBN 978-1-118-60861-6. OCLC 875820167.
  7. ^ Page Module:Citation/CS1/styles.css has no content.Tahiri, Soufiane (2016). Mastering mobile forensics : develop the capacity to dig deeper into device data acquisition. Birmingham, UK. ISBN 978-1-78528-106-8. OCLC 952135850.{{cite book}}: CS1 maint: location missing publisher (link)
  8. ^ Hay, R. (2017). fastboot oem vuln: Android bootloader vulnerabilities in vendor customizations. In 11th USENIX Workshop on Offensive Technologies (WOOT 17).
  9. ^ Page Module:Citation/CS1/styles.css has no content."fastboot.c\aboot\app - kernel/lk -". source.codeaurora.org. Archived from the original on 2021-09-11. Retrieved 2021-09-11.
  10. ^ Page Module:Citation/CS1/styles.css has no content."Undocumented Fastboot Oem Commands". carlo.marag.no. 2020-09-18. Retrieved 2021-09-11.
  11. ^ Page Module:Citation/CS1/styles.css has no content."edk2/AndroidFastbootApp.c at master · tianocore/edk2". GitHub. Retrieved 2021-09-11.
  12. ^ Page Module:Citation/CS1/styles.css has no content.u-boot/u-boot, u-boot, 2023-04-15, retrieved 2023-04-15

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