開機引導模式下使用 。此文說明主要適用android 6.0及以上版本
下載以下幾個文件,CMD命令窗口切換到此目錄就可使用了,當然還要安裝USB驅動、打開USB調試(可選):

文章插圖
adb工具
怎么進入此模式:
手機端:電源鍵+音量減/加
電腦端:用ADB工具,命令:adb reboot bootloader
格式: fastboot [OPTION…] COMMAND…
版本:與1.0.41版的adb適應
flashing: 寫入命令
update ZIP : Flash all partitions from an update.zip package. 如fastboot update xxx.zip , xxx.zip中包含boot.img, recovery.img, system.img等鏡像文件
flashall : Flash all partitions from $ANDROID_PRODUCT_OUT. On A/B devices, flashed slot is set as active. Secondary images may be flashed to inactive slot. 會自動搜索當前目錄下的所有img文件,將它們都刷入系統對應分區 。
flash PARTITION [FILENAME] : Flash given partition, using the image from $ANDROID_PRODUCT_OUT if no filename is given. 這里的PARTITION有
boot/recovery/system/userdata/cache等
fastboot flash boot boot.img將當前目錄下的boot.img文件刷進系統的boot分區
fastboot flash recovery recovery.img將當前目錄下的recovery.img文件刷進系統的recovery分區
例子:
c:tmpfastboot>fastboot flash boot C:tmpF103_BAKboot20220118.img
Sending ‘boot’ (16384 KB)OKAY [1.583s]
Writing ‘boot’OKAY [0.355s]
Finished. Total time: 2.011s
c:tmpfastboot>fastboot flashrecovery C:tmpF103_BAKrecovery20220118.img
Sending ‘recovery’ (16384 KB)OKAY [1.584s]
Writing ‘recovery’OKAY [0.354s]
Finished. Total time: 2.001s
basics:
devices [-l] : List devices in bootloader (-l: with device paths).
c:tmpfastboot>fastboot devices
000007CF00632D90fastboot顯示以fastboot結尾的設備號
c:adbadb32>adb devices
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
List of devices attached
8T8HBIZSBU9PCM4Sdeviceadb時顯示以device結尾
getvar NAME : Display given bootloader variable.
reboot [bootloader] : Reboot device.
fastboot reboot重新啟動到正常模式
fastboot reboot bootloader重新啟動到引導模式
fastboot reboot recovery重新啟動到恢復模式
例子:
c:tmpfastboot>fastboot reboot bootloaderandroid 5.0及以上可用此命令
Rebooting into bootloaderOKAY [0.003s]
Finished. Total time: 0.007s
c:tmpfastboot>fastboot reboot
RebootingOKAY [0.002s]
Finished. Total time: 0.006s
locking/unlocking:上鎖/解鎖命令,將會刪除個人數據
flashing lock|unlock : Lock/unlock partitions for flashing
fastboot flashing lock給BL上鎖
fastboot flashing unlock解BL鎖
flashing lock_critical|unlock_critical : Lock/unlock ‘critical’ bootloader partitions.
flashing get_unlock_ability : Check whether unlocking is allowed (1) or not(0).
advanced:
erase PARTITION : Erase a flash partition.
format[:FS_TYPE[:SIZE]] PARTITION : Format a flash partition.
set_active SLOT : Set the active slot.
oem [COMMAND…] : Execute OEM-specific command. 這里的command主要是自定義的命令(慎用) 。高版本的系統可用fastboot oem help 查詢有效的命令 。
android 6.0以前:
fastboot oem lock上BL鎖
fastboot oem unlock解BL鎖
c:tmpfastboot>fastboot oem unlock
OKAY [ 30.582s]
Finished. Total time: 30.591s
另一個手機的解鎖:
c:tmpfastboot>fastboot oem unlock
(bootloader) Start unlock flow
OKAY [ 29.972s]
Finished. Total time: 29.983s
c:tmpfastboot>fastboot oem lock
(bootloader) Start lock flow
OKAY [ 43.440s]
Finished. Total time: 43.449s
C:tmpfastboot-1>fastboot oem reboot-recovery重啟到recovery模式
OKAY [0.003s]
Finished. Total time: 0.050s
還有:fastboot oem reboot-bootloader
查詢設備BL上鎖情況:
fastboot oem get_bootinfo此處的get_bootinfo是用戶自定義命令
C:tmpfastboot>fastboot oem device-info
(bootloader) Verity mode: true
(bootloader) Device unlocked: false
(bootloader) Device critical unlocked: false
(bootloader) Charger screen enabled: true
OKAY [0.013s]
Finished. Total time: 0.018s
gsi wipe|disable : Wipe or disable a GSI installation (fastbootd only).
wipe-super [SUPER_EMPTY] : Wipe the super partition. This will reset it to contain an empty set of default dynamic partitions.
boot image: 用指定鏡像文件臨時啟動系統,不會更改原系統的啟動文件,如利用magisk加入root權限的boot文件啟動
boot KERNEL [RAMDISK [SECOND]] : Download and boot kernel from RAM.
用magisk_patched-23000_EJX2G.img(加了面具的boot.img)啟動手機例子:
C:tmpfastboot>fastboot boot C:tmpfastbootmagisk_patched-23000_EJX2G.img
Sending ‘boot.img’ (16384 KB)OKAY [1.573s]
BootingOKAY [0.060s]
Finished. Total time: 1.678s
flash:raw PARTITION KERNEL [RAMDISK [SECOND]] : Create boot image and flash it.
–dtb DTB : Specify path to DTB for boot image header version 2.
–cmdline CMDLINE : Override kernel command line.
–base ADDRESS : Set kernel base address (default: 0x10000000).
–kernel-offset : Set kernel offset (default: 0x00008000).
–ramdisk-offset : Set ramdisk offset (default: 0x01000000).
–tags-offset : Set tags offset (default: 0x00000100).
–dtb-offset : Set dtb offset (default: 0x01100000).
–page-size BYTES : Set flash page size (default: 2048).
–header-version VERSION : Set boot image header version.
–os-version MAJOR[.MINOR[.PATCH]] : Set boot image OS version (default: 0.0.0).
–os-patch-level YYYY-MM-DD : Set boot image OS security patch level.
Android Things:
stage IN_FILE : Sends given file to stage for the next command.
get_staged OUT_FILE : Writes data staged by the last command to a file.
options: 選項參數
-w : Wipe userdata.
-s SERIAL : Specify a USB device.
-s tcp|udp:HOST[:PORT] : Specify a network device.
-S SIZE[K|M|G] : Break into sparse files no larger than SIZE.
–force : Force a flash operation that may be unsafe.
–slot SLOT : Use SLOT; ‘all’ for both slots, ‘other’ for non-current slot (default: current active slot).
–set-active[=SLOT] : Sets the active slot before rebooting.
–skip-secondary : Don’t flash secondary slots in flashall/update.
–skip-reboot : Don’t reboot device after flashing.
–disable-verity : Sets disable-verity when flashing vbmeta.
–disable-verification : Sets disable-verification when flashing vbmeta.
–unbuffered : Don’t buffer input or output.
–verbose, -v : Verbose output.
–version : Display version.
【怎么進入模式 如何進入fastboot】–help, -h : Show this message.
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