刷机教程：
先换上最新的recovery2.8.5.0，再把 BlePart-LVM-11.zip（LVM安装文件)用recovery刷上去（要放在SD卡中刷入，此文件请自行搜索下载。另外注意备份手机内置存储的文件，刷完后会格式化），自动重启后，最后把cm12刷上去就可以了。
更新日志：
Since Sun Apr 19 01:47:16 UTC 2015
===================================
* bionic
d0079cb Revert "Revert "Reenable support for non-PIE executables""
* build
e7c5c67 arm: Allow disabling PIE for dynamically linked executables
c599dca Colorize more target file output
* device/huawei/msm7x30-common
4f1ce60 msm7x30-common: Enable MDP composition
* external/wpa_supplicant_8
814ede5 Restart WLAN driver after receiving firmware crashed message
* frameworks/av
c82c862 stagefright: Fix the unhappy path in ACodec configuration step
043435e audio: Fix ringtone mute issue
30672c8 audio: Reduce device switch delay
da6beba nuplayer: Fix audio EOS notifiy on AudioSink not ready
a02a9ed Revert "nuplayer: Add cached lookup of track duration"
3f2532f Revert "Audio streaming error when playing a stream that contains "end of file"."
* frameworks/base
f497908 am: Adjust min free values for low RAM devices
effc883 Fix: In Afrikaans the unit name is not before size but after.
b87efcf ScreenCap : Add jpeg support
c1a96ca base: ConnectivityServer: Don't reap the new network
b616e0b Fix HTC headset handling.
9985435 frameworks: display: Added automatic brightness configs
f3dc1ca fix Notification volume slider linking
dd8c727 Added carrier selection to DataUsageTile
e4f8d89 Don't create unnecessary RenderThread's instance when executing 'dumpsys gfxinfo'
8517f09 Use fabsf() rather than abs()
b594896 Fix ANR caused by hwuiTask thread
5f487e4 framework: add KillSwitch stubs
40d6341 AudioService: fix crash when no music player found
b5758fb Revert "third part apps can disable the secret lockscreen"
324beb3 Remove opaque check in preparing dirty region
f189725 base: nat464X: Only update ipv4 pseudo-interface when it's connected
a7c41cd frameworks/base: Zen mode add 10 and 12 hours downtime
