Keep holding them until you see the Huawei logo and the EMUI update screen appears.
Release the buttons. The device will automatically detect the UPDATE.APP file and begin the installation. Method B: Software Upgrade (For Working Devices) Go to the Settings menu. Navigate to Update > Menu > Local Update. The phone will scan the SD card for the dload folder. Confirm the update to start the process. Step 4: Completion and Setup The flashing process typically takes 5 to 10 minutes. huawei cun-l21 flash file sd card
There are two ways to trigger the update depending on whether your phone can still turn on. Method A: The Three-Button Combo (For Boot Loops) Turn off your device completely. Keep holding them until you see the Huawei