How to brush the mobile phone of Mijia model T8550?

1: Make sure that the mobile phone can connect to the computer with usb cable.

2. Important information in the spare mobile phone, such as contacts, text messages, software and other important data.

3. Keep the power of the mobile phone above 70%.

4. Go to official website and download the official firmware upgrade package. Just download it and put it on your computer.

Second, the operation method steps:

1: Unzip the downloaded firmware package on the computer.

2. Then the mobile phone is normally connected to the computer with a data cable, and the firmware package in zip format is found in the decompressed folder, and directly copied to the root directory of the SD card of the mobile phone, which will be used later.

3: Turn off the phone, then press and hold the volume up button and the power button (screen lock button) of the phone at the same time, and then enter the recovery mode.

4. Press the volume button to select the recovery mode, and then press the screen lock button to enter the recovery mode (wait patiently for about 5 seconds). Operating instructions: Volume+-are the up and down selection keys respectively, and the screen lock key is the execution key (confirmation key).

5: Then perform double clearing, press the volume key to select Erase Data/Restore Factory Settings and Erase Cache Partition, which are both double clearing operations, and then proceed to the next operation after the operation is completed.

6. Press the volume button-select to update the application and system from the in _ SD card application, and then click the lock button to enter the selection menu.

7: Press the volume button to select the firmware package copied to the SD card of the mobile phone, and click the lock button to enter the upgrade interface. Please be patient during the upgrade process.

8: When finished, choose the first item to restart the system and restart the phone now.