Select > eRecovery mode > Download update and recover .
Use this if the phone is stuck in a boot loop and you have Wi-Fi. Connect the phone to a power source. Select > eRecovery mode > Download update and recover
Create a folder named in the root directory of the SD card. Select > eRecovery mode > Download update and recover
Power off, then hold to enter the recovery menu. Select > eRecovery mode > Download update and recover
Extract the downloaded firmware and move the file (and any required data zips) into the dload folder. Power off your phone.
Wait for the process to complete; the device will reboot automatically once finished.
A common source for official firmware and USB drivers for Huawei/Honor devices. Installation Methods Method 1: SD Card (dload) Method (Recommended)