系统安全 [Android]问题解决-Device must be bootloader unlocked

现象

在push文件时，remount命令发生如下报错：

$ adb remount

Device must be bootloader unlocked

解决

1. 打开 开发者模式中的OEM unlocking开关

2. fastboot unlock设置

adb reboot bootloader

fastboot flashing unlock

根据屏幕提示，按up键选择unlock

$ fastboot flashing unlock

...

(bootloader) Start unlock flow

OKAY [ 20.178s]

finished. total time: 20.178s

重启回到normal模式开机

fastboot reboot

3. 再次remount

$ adb root

restarting adbd as root

$ adb remount

Verity is already disabled

Using overlayfs for /system

Using overlayfs for /system_ext

Using overlayfs for /vendor

Using overlayfs for /product

Remounted /system as RW

Remounted /system_ext as RW

Remounted /vendor as RW

Remounted /product as RW

Overlayfs enabled.

Remount succeeded

Now reboot your device for settings to take effect

$ adb reboot

4. 问题解决

$ adb remount

Verity is already disabled

Remounted /system as RW

Remounted /system_ext as RW

Remounted /vendor as RW

Remounted /product as RW

Remount succeeded

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