Ten minutes later, the phone rebooted on its own. The Huawei logo appeared, bright and crisp, followed by the cheerful animation of the EMUI interface.
Nothing.
The SD card flashing method is the safest way to revive this device because it bypasses the need for Mediatek preloaders and USB VCOM drivers which are notoriously buggy on modern PCs. Huawei Scl-u31 Firmware Sd Card
Huawei releases multiple firmware builds for the SCL-U31 based on region and carrier. Common variants include: Ten minutes later, the phone rebooted on its own