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List of the contents of this article:

• 1,UEFA EURO How to downgrade Huawei mate9 system
• 2. How to downgrade the version of Huawei mobile phoneBen
• 3, How to downgrade the system of Huawei mobile phones?

How to downgrade Huawei mate9 system

Connect the mobile phone to the computer USB, authorize the computer to manage the mobile phone, click the "Agree" button in the pop-up box, and click Agree on the mobile phone Huawei protocol. Click the word "Huawei Mobile Assistant" in the lower left corner of the assistant interface, click "Upgrade" in the pop-up box, and upgrade the Huawei Mobile Assistant to the latest version.

Step 2: Connect the mobile phone to the computer's USB and authorize the computer to manage the mobile phone. Step 3: Open Huawei Mobile Assistant, click the red box in the lower left corner, and see if there is the latest version of the mobile assistant to upgrade. If so, click Upgrade in the pop-up box to upgrade Huawei Mobile Assistant to the latest version. Step 4: Click System Update.

Through backup: back up the mobile phone data and double-clear the mobile phone. Through the path, download and decompress the complete package according to the model, and then copy the dload folder to the root directory of the SD card, and then make sure that there is an "UPDATE.APP" file in the dload folder.

How to downgrade the version of Huawei mobile phone

First of all, we open the mobile phone and click to open "System" in the mobile phone settings. Then we click to open "Reset" in the pop-up window. Then we can return to the original version by clicking "Restore Factory Settings" in the pop-up window.

Step 1: Connect the mobile phone to the computer USB and authorize the computer to manage the mobile phone. Step 2: Click the consent button below in the pop-up box. Step 3: PointClick the "red dot" in the lower left corner, click Upgrade in the pop-up box, and upgrade Huawei Mobile Assistant to the latest 0.300 version. Step 4: Click System Update.

Open Huawei Mobile Assistant on the computer (Windows system), click the part indicated by the arrow in the lower left corner ("Huawei Mobile Assistant" + version number), click Upgrade in the pop-up box, and upgrade Huawei Mobile Assistant to the latest version.

How to downgrade the system of Huawei mobile phones?

1. Step 1: Connect the mobile phone to the computer USB and authorize the computer to manage the mobile phone. Step 2: Click the agree button below in the pop-up box, and click to agree to the Huawei agreement on your mobile phone. Step 3: Click the "red dot" (red box part) in the lower left corner, click Upgrade in the pop-up box, and upgrade Huawei Mobile Assistant to the latest version 0.300.

2. Connect the mobile phone to the computer USB, authorize the computer to manage the mobile phone, click the "Agree" button in the pop-up box, and click to agree to the Huawei protocol on the mobile phone. Click the word "Huawei Mobile Assistant" in the lower left corner of the assistant interface, click "Upgrade" in the pop-up box, and upgrade the Huawei Mobile Assistant to the latest version.

3. After unlocking the Huawei mobile phone and entering the system, select the setting icon of the mobile phone to enter. After entering the settings, in the search box, enter HDB and select the option below to allow HIsuite to connect devices through HDB. After clicking, in the more security settings of the mobile phone, the option switch that allows HIsuite to connect the device through HDB will be turned on.

4. The first step is to click and open the settings app. The second step, after coming to the setting page, click the system option pointed by the arrow.Step three, in the system page shown in the figure below, click the arrow on the right to reset.