Huawei P9 system update, how to go back to the original old version?

Huawei has updated the P9 system, how to go back to the original old version? Then you find out his original one, use your ID card to board it again, and delete the current one to restore the old version.

Huawei P9 system has been updated, how to go back to the original old version? You can do this in the settings. Splurge on the original factory settings. In re-. Chongqing settings to retrieve the original old version.

Hello, you need to connect to the official mobile phone assistant of the computer, and then go back to the state after connecting, it should be noted that the data in the mobile phone is backed up, the detailed work needs to be prepared, the power supply needs to be paid attention to, and it cannot be said that there is no power when the fallback.

The system of this phone has been updated, and if you want to go back to the original old version, you only need to do a factory reset to restore it to the original version.

In this case, after the mobile phone system is updated, if you want to go back to the previous version, then the only way to solve it is to reinstall the previous system version, so that you can restore to the previous version.

Once the system has been updated, you will not be able to go back to the new version unless you flash your Smartphone II

The system can only be upgraded, not downgraded, all phones are the same, you can't downgrade back if you upgrade, unless you use third-party software to reflash your phone.

If the Huawei P9 mobile phone system is updated, it cannot be rolled back to the original old version, because the current EMUI system no longer supports rolling back to the old version.

This is not easy to return, if you want to return it, it is recommended that you go to the after-sales service for processing.

After the mobile phone system version is updated, there is no way to restore to the original version, even if the factory settings are restored.

If you want to go back to the old version of Huawei mobile phones, you can use Huawei mobile phone assistant, and you can also find tutorials in the pollen club!

Huawei P9 system has been updated, how to go back to the original old version You can go to the after-sales service to see if they have a way to downgrade the system for you.

You can only flash the machine.

It is recommended to link a computer.

Downgrading is possible.

It is recommended to upgrade the latest version of the system in a timely manner. Generally, system updates will improve the performance of the phone, enhance the protection of personal privacy and data security, and provide more fresh functions, so it is recommended to upgrade in time.

If you don't upgrade, the current system will work normally.

Mine can only be refunded at most.

Huawei P9 Factory Reset Steps:

Open Settings.

2.Click on "Advanced Settings > Backup & Reset > Factory Reset".

3.Choose whether to format the internal storage and tap "Reset Phone".

4.Tap "Reset Phone", at this time the phone starts to factory reset and restarts automatically.

Note:1Before doing a factory reset, back up your important data.

2.A factory reset deletes personal data on your internal storage, including: fingerprints, mail accounts, self-installed apps, app settings.

3.Checking "Format internal storage" will delete all files on the internal storage space, such as ** and **, etc., please choose carefully.

There are two ways, one is to enter "Settings" - Privacy - Factory Reset from within the phone system. There is also a way,In the case of ensuring that the phone has sufficient power,Press the "power button" and "volume up button" at the same time in the shutdown state for more than 5 seconds,It must be guaranteed that there is such a long time,Then the phone will enter a setting state,You can look at it one by one and try it,But the premise is to take a good look at it before you do it,This will completely empty all the things you have installed on the phone,Flashing (card swiping) also has to go through such a program。。

It is not recommended to flash the phone, if the phone system is stuck, you can follow the steps below:

1.Keep your phone's battery high at 20%. In order to prolong the battery life and protect the phone when the battery is low, the performance of the phone will be limited.

2.If your phone has third-party phone management software, try uninstalling the app. Usually, this kind of software conflicts with the mobile phone manager that comes with the phone, which will cause the operation to freeze.

3.If your phone is rooted, revert to the official stable version.

4.Running too many background applications will cause the system to freeze, so it is recommended that you clean up the background processes in time.

5.Restart the phone: If the phone is not turned off for a long time, it will cause too much cached data in the system, and the phone will not run well, etc., you can try to restart the phone to recover.

6.Change phone settings with Phone Manager:

1) Tap Phone Manager > Auto-Start Management to close the software that doesn't need to start automatically when the phone is turned on.

2) Open Phone Manager > Cleanup to speed up the cache and clean up the cache.

4) If your device supports microSD card storage, please unplug, replace or clean the SD card.

5) Use a data network or WLAN with stable internet speed and signal.

Precautions before upgrading.

1. The EMUI upgrade will not erase user data, but it is recommended that you should back up all important data before upgrading.

2. EMUI only applies to specified models (EVA-AL00 AL10 CL00 TL00 DL00) and does not support other models.

3. EMUI has not released SD card swiping packages, if you find that there is an SD card package on the Internet, it is an unofficial package, please use it with caution.

On December 19, 2016, the P9 Android version was fully opened to mobile phone services (membership services), and the P9 B198 version was upgraded.

How to upgrade: Step 1: Upgrade your phone to B198 (

You can check whether the phone is on the B198 version by setting the last four digits of the version number of "About the phone", if it is on this version, please ignore this step; If you are not on this version, follow the steps below. Tap Settings > System Update > Check for updates to upgrade your phone to version B198.

Note: Be sure to back up the important data in your phone before upgrading.