Love to play computer games On August 7, it was reported that in the early morning of this morning, Google began to push the official version of Android 9 Pie system. The first to support the new system was its Pixel phone and the Essential Phone, the father of Android. Users who receive the new system push first must be very happy, but if they regret it, it will not be so easy to brush back the old version.

The god of XDA forum found that the rollback protection function is mandatory in Android 9 system. In fact, since Android 8.0, Google has added the function of preventing rollback in the system, but it has been a recommended function until now. After it has become a mandatory function, including phones of other brands, it can hardly be downgraded once they are upgraded to Android 9.

Why can't a new system be rolled back? Because Android 9 has built-in Android Verified Boot 2.0, if the user forcibly swipes the old version and the verification system detects that the current version is lower than the previous version, it will refuse to start the device. Do you think this is a great move?

In my opinion, it is harmless that the new Android system cannot be downgraded. If you are a person who likes playing with computers and want to use tools like Xposed in the new system, you can upgrade the system after the developer of the tool launches a new version. We don't seem to have heard that Android, like a certain version of iOS, will significantly reduce the performance of mobile phones after upgrading. In addition, users of some brands are difficult to upgrade, let alone downgrade.

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