You must use a verified repository like HardReset Official Firmware Database to find the official stock ROM.

: A card with at least 4GB of space (8GB is recommended).

The Huawei Y625 runs Android 4.4 and is powered by a 2000mAh non-removable battery. Gadgets 360

Keep all three buttons pressed until the screen illuminates and the Huawei logo appears.

How to Flash Huawei Y625-U32 Firmware via SD Card: A Complete Step-by-Step Guide

Use a reliable MicroSD card with at least 4GB of free space . Format it to the FAT32 file system using a computer before proceeding.

Release all buttons immediately when the Huawei logo appears on the screen.

Release all buttons once you see the Android upgrade screen or an installation progress bar.