How to deal with the red exclamation mark when Huawei p40 update system fails?

If you use a Huawei mobile phone, the online upgrade of the mobile phone will automatically restart and enter the upgrade interface, prompting "upgrade failed". The red exclamation mark may be an error in the upgrade package obtained by the mobile phone, which leads to the failure of the upgrade and the failure to boot normally. You can use the mobile assistant or eCoverage to try to restore the system, which may result in the loss of mobile phone data. If the phone can be turned on, please back up the data immediately (applications such as WeChat /QQ need to be backed up separately).

The operation method is as follows:

First, repair the system through electronic recovery.

Tip: Make sure to upgrade in WLAN environment. During the upgrade process, the battery power is greater than 30% or the mobile phone is placed in a charging state.

1. Connect the mobile phone to a computer or charger through a USB cable. When the mobile phone is turned off, press the volume increase button+power button at the same time. After the mobile phone vibrates, it will enter the interface to select the upgrade mode > upgrade of the ecosystem system (Mate 30 Pro/Mate 30 RS has no physical volume button, so it is necessary to press the power button five times continuously to enter the ecosystem mode).

2. click download latest version and restore > download and restore, and the system will start WLAN and scan available hotspots. After selecting and connecting to an available WLAN hotspot, the system will automatically obtain the installation package information and download it.

3. After the download is completed, it will be automatically upgraded, and the mobile phone will automatically restart after the upgrade is completed. It will take some time to upgrade the mobile phone. Please be patient. Please do nothing during the upgrade.

Second, use mobile assistant to repair the system.

1. Install the latest version of the mobile assistant on the computer;

2. After the phone is turned off, connect the computer with a USB cable, and press and hold the volume down button+power button for a few seconds to enter the quick start mode.

Tip: Mate 30 Pro/Mate 30 RS mobile phone has no volume button. After the phone is turned off, connect the phone to the computer through USB cable. Press the power button continuously for 3~5 times for a few seconds, the screen will light up and the mobile phone will enter the fast boot mode.

3. Click Mobile Assistant > System Repair > Continue > Start Repair.

4. Wait for the repair to be completed. The system will revert to the specified version and cannot be selected.

5. The phone will automatically restart and enter the main interface. This process will take some time. Please be patient.

If the above measures fail to solve your problem, please back up important data in advance (WeChat /QQ and other applications need to be backed up separately) and bring the purchase voucher to Huawei Customer Service Center for testing and processing.