Nexus5刷入google 官方镜像包

原文 http://06peng.com/archives/83

由于同事的白色版Nexus5收不到官方5.0的推送，于是我决定手动刷入官方5.0的镜像包。下载地址：https://developers.google.com/android/nexus/images#takjujwr66v

其中遇到一些问题，在这里记录一下。下面是官方的刷机教程：

To flash a system image:

Download the appropriate system image for your device below, then unzip it to a safe directory.
Connect your device to your computer over USB.
Start the device in fastboot mode with one of the following methods:

Using the adb tool: With the device powered on, execute:
```
adb reboot bootloader
```
Using a key combo: Turn the device off, then turn it on and immediately hold down the relevant key combination for your device. For example, to put a Nexus 5 (“hammerhead”) into fastboot mode, press and hold Volume Up + Volume Down + Power as the device begins booting up.

If necessary, unlock the device’s bootloader by running:
```
fastboot oem unlock
```
The target device will show you a confirmation screen. (This erases all data on the target device.)
Open a terminal and navigate to the unzipped system image directory.
Execute the flash-all script. This script installs the necessary bootloader, baseband firmware(s), and operating system.

Once the script finishes, your device reboots. You should now lock the bootloader for security:

Start the device in fastboot mode again, as described above.
Execute:
```
fastboot oem lock
```

Locking the bootloader does not wipe any data, but when you want to flash it again, you must run fastboot oem unlock again, which will wipe the data.

操作这些命令行可能相对有些麻烦。于是我收集了一些简单的工具，方便以后使用。Nexus 5一键解锁+一键刷Recovery+一键root工具

这个工具很简单，解压到任意目录，然后执行对应的bat即可。

下面开始刷机步骤：

第一步是解锁：执行上面工具的一键解锁.bat即可。

第二步是将下载好的镜像包解压，然后进入对应的目录：

111

直接执行flash-all.bat，按照google 官方的教程的这样的，但我执行这一步的时候却出现了问题：

target reported max download size of 518205818 bytes

archive does not contain ‘boot.sig’

archive does not contain ‘recovery.sig’

failed to allocate 1813984020 bytes

error: update package missing system.img

Press any key to exit…

卧槽上网一搜索才发现是google的问题。还要解压image-hammerhead-lrx21o 这个目录，得到下面这些文件：

2222

然后再重新执行flash-all.bat即可，要耐心等待。这个过程会比较久。

如果上述步骤不行的话，就尝试自己手动执行命令：

1、刷入bootloader、radio，命令如下：

fastboot flash bootloader bootloader-hammerhead-hhz12d.img

fastboot flash radio radio-hammerhead-m8974a-2.0.50.2.21>.img

两处文件名要替换成相应的文件名字。

2、重启(必须的)：

fastboot reboot-bootloader

3、依次刷入其他镜像文件：

fastboot flash recovery recovery.img

fastboot flash boot boot.img

fastboot flash system system.img

fastboot flash vendor vendor.img

4、为了避免刷机后出现各种意外问题，包括返回、最近按键无法使用，存储容量只有16GB，强烈建议双清(注意备份数据)：

fastboot flash cache cache.img

fastboot flash userdata userdata.img

5、再次重启：

fastboot reboot