"Android is upgrading, optimizing program" solution after reboot

This phenomenon is upgraded to 4.2.2, and then the 4.2.2 Google Pack appears. The more apps you install, the more time you'll have to wait each time you restart, because you'll be prompted to "optimize 1/50 apps" until you've optimized all of your installed apps. To the foreign forum after asked a circle, found that the two files in the mischief:

/system/framework/com.google.widevine.software.drm.odex
/system/framework/com.google.widevine.software.drm.jar

Attempted to be deleted in re and regenerated after each reboot. Finally, from the forum to learn, to restart to recovery (third-party recovery such as Cwm), and then on the PC to enter the command prompt, enter the Adb.exe directory, enter the following command:

ADB shell
Mount System
Rm/system/framework/com.google.widevine.software.drm.odex
Rm/system/framework/com.google.widevine.software.drm.jar

The two files were completely deleted. Reboot and you will see that annoying hint no longer appears after booting.

By the way, to prevent any adverse effects of deleting these two files, remember to copy them to other directories before doing so, so you can copy them back in case you need to restore them later.