After Huawei upgraded, the information could not be opened.

First of all, make sure that the battery of the mobile phone is charged, and you can connect the charger for a while before turning it on. If there is power failure, please press and hold the power button 10 for more than 0 seconds to see if the phone can be forcibly restarted. If the mobile phone can enter the standby interface normally, it can be repaired by restoring the factory settings. If you still can't start/restart, you can repair your phone by forced upgrade and recovery. Forced recovery will cause your data to be lost, so you should make a good backup of key data at ordinary times.

1) Download the software version

Please download the software version of the corresponding mobile phone from the emui website in advance.

2) 2) Local upgrade of SD card

1. Prepare an SD card with a capacity of 2G or more, and ensure that the available space is larger than the size of the upgrade package.

2. Create a "dload" folder in the root directory of SD card (note: for telecom glory, please create a "dload" folder in the root directory of memory card) and UPDATE the downloaded software. APP "into the dload folder. 3. Insert the charger, press and hold the volume up and down buttons, and press and hold the power button 10 seconds or more to start the mobile phone. The mobile phone will enter the SD card for mandatory upgrade. If the battery is exhausted or low, please charge it before upgrading to ensure that the phone can be started. Please insert the charger during the upgrade, otherwise the upgrade will fail due to insufficient battery power.

4. After the mobile phone enters the upgrade, it will automatically complete the upgrade. The general upgrade time is about 5 minutes. If the upgrade fails, you can try again.

The answer is not easy. I hope I can help you. If you are satisfied, please help me adopt it. Thank you.