Format the SD card to the file system. This ensures the phone's bootloader can read the storage partition.
Some SCL-U31 firmware packages are designed for the MediaTek chipset. For these, you can use the .
Wait for the installation to finish. The phone will automatically restart when the process hits 100%. Troubleshooting Common Flashing Failures
Before starting, ensure the following conditions are met to avoid bricking the device: Battery Level : Maintain at least 50% to 70%
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Remove the battery (if removable) for 30 seconds, put it back in, charge it for an hour, and re-attempt Method A.
Press and hold the , Volume Down , and Power Button simultaneously.
: The Micro SD card must be formatted as FAT32 .
Open the formatted SD card directory and create a new folder named exactly (all lowercase). Extract the downloaded firmware zip file on your computer. Locate the UPDATE.APP file within the extracted folders. Format the SD card to the file system
If your phone is still functional and you just want to update the software, you can use the internal menu:
Huawei removed many older firmware downloads from their official consumer site. However, you can still find safe, stock packages from trusted sources:
Flashing the wrong firmware can permanently hard-brick your device. Always triple-check that the firmware is specifically for (not SCL-U23, SCL-L01, etc.).
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Copy the UPDATE.APP file and paste it directly inside the dload folder on your SD card.
Once the progress bar reaches 100%, the phone will display a success message and automatically reboot. The first boot after flashing can take up to 10 minutes. Go through the initial Android setup wizard.
You need a high-quality SD card with at least 4GB of free space. Class 10 speed is recommended for stable data transfer.