To unlock the bootloader (required for any modification):
On this device, "Fastboot mode" is not a user-friendly menu. It is a low-level, text-based state where the device waits for specific USB commands (e.g., fastboot oem unlock ). If your goal is to root, install TWRP, or flash a custom ROM (like CyanogenMod 11/12), this is your gateway. Step-by-Step: The Physical Key Dance (Hardware Interrupt Method) Because the Y300 lacks a dedicated recovery/Fastboot partition toggle in software, you must trigger the bootrom to enter Fastboot via voltage key sequencing. How to Open Fastboot Mode on HUAWEI Ascend Y300
fastboot devices Output example: ABCDEF123456 fastboot To unlock the bootloader (required for any modification):