fastboot (1)

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NAME

fastboot - Android flashing and booting utility

SYNOPSIS

B]fastboot] [-w] [-u] [-s I]device]] [-p I]product]] [-c I]cmdline]] [-i I]vendorId]] [-b I]baseAddr]] [-n I]pageSize]] [-S I]size][K|M|G]] I]command]

DESCRIPTION

B]fastboot] is a command line tool for flashing an Android device, boot an Android device to fastboot mode, etc..

OPTIONS

-w

Erase userdata and cache (and format if supported by partition type).

-u

Do not erase partition before formatting.

-s I]device]

Specify device serial number or path to device port.

-l

With B]devices] command, list device paths."

-p I]product]

Specify product name.

-c I]cmdline]

Override kernel commandline.

-i I]vendorId]

Specify a custom USB vendor ID.

-b|--base I]baseAddr]

Specify a custom kernel base address (default: B]0x10000000]).

--kernel-offset

Specify a custom kernel offset (default: B]0x00008000]).

--ramdisk-offset

Specify a custom ramdisk offset (default: B]0x01000000]).

--tags-offset I]offset]

Specify a custom tags offset (default: B]0x00000100]).

-n|--page-size I]pageSize]

Specify the nand page size (default: B]2048]).

-S I]size][K|M|G]

Automatically sparse files greater than [aq]size[aq]. B]0] to disable.

--slot I]suffix]

Specify slot suffix to be used if the device supports slots. This will be added to all partition names that use slots. B]all] can be given to refer to all slots. B]other] can be given to refer to a non-current slot. If this flag is not used, slotted partitions will default to the current active slot.

-a, --set-active[=]

Sets the active slot. If no suffix is provided, this will default to the value given by B]--slot]. If slots are not supported, this does nothing. This will run after all non-reboot commands.

--wipe-and-use-fbe

On devices which support it, erase userdata and cache, and enable file-based encryption.

--unbuffered

Do not buffer input or output.

--version

Display version.

-h|--help

show this message.

COMMANDS

fastboot update I]filename]

Reflash device from update.zip.

fastboot flashall

Flash boot, system, vendor, and (if found) recovery.

fastboot flash I]partition] [I]filename]]

Write a file to a flash partition.

fastboot flashing lock

Locks the device. Prevents flashing.

fastboot flashing unlock

Unlocks the device. Allows flashing any partition except bootloader-related partitions.

fastboot flashing lock_critical

Prevents flashing bootloader-related partitions.

fastboot flashing unlock_critical

Enables flashing bootloader-related partitions.

fastboot flashing get_unlock_ability

Queries bootloader to see if the device is unlocked.

fastboot erase I]partition]

Erase a flash partition.

fastboot format[:[I]fs type]][:[I]size]]] I]partition]

Format a flash partition. Can override the fs type and/or size the bootloader reports.

fastboot getvar I]variable]

Display a bootloader variable.

fastboot set_active I]suffix]

Sets the active slot. If slots are not supported, this does nothing.

fastboot boot I]kernel] [I]ramdisk] [I]second]]]

Download and boot kernel.

fastboot flash:raw boot I]kernel] [I]ramdisk] [I]second]]]

Create bootimage and flash it.

fastboot devices [-l]

List all connected devices (with device paths if B]-l] is used).

fastboot continue

Continue with autoboot.

fastboot reboot [bootloader]

Reboot device [into bootloader].

fastboot reboot-bootloader

Reboot device into bootloader.

fastboot help

Show this help message.

AUTHORS