Your phone should have at least 50% to 70% charge to prevent it from shutting down mid-flash.
If your phone is working and you simply want to update or downgrade, use the hidden Project Menu: Insert the SD card with the dload folder. Open the Phone Dialer and enter the code: *#*#2846579#*#* .
Updating the (marketed as the Huawei Y6 or Honor 4A ) firmware via an SD card is the most reliable method to fix boot loops, remove custom ROMs, or unbrick a device. This "dload" method allows you to install the official UPDATE.APP file directly through the phone's recovery environment. Prerequisites for Flashing Huawei Scl-u31 Firmware Sd Card
Use a high-quality MicroSD card formatted to FAT32 .
Download the correct stock ROM for the SCL-U31 model specifically. Step-by-Step SD Card Flashing Guide (Dload Method) 1. Prepare the SD Card Your phone should have at least 50% to
If your phone cannot reach the home screen, use this hardware-button method: Power off your Huawei SCL-U31 completely. Insert the prepared SD card.
Release the buttons once the Huawei logo or an update progress bar appears. Updating the (marketed as the Huawei Y6 or
The first boot after a firmware update can take up to 10 minutes. If it takes longer, try performing a "Wipe Cache Partition" from the recovery menu (Hold Volume Up + Power). How to FLASH HUAWEI phone Using SD card [Full Tutorial]
Extract the downloaded firmware zip file on your computer. You should see a file named inside a folder. Insert your SD card into your PC.
In the menu that appears, navigate to > Software Upgrade > SDCard Upgrade . Confirm by tapping OK to begin the installation. Troubleshooting Common Issues