Resurrection of the Huawei LUA-L02 (MT6735M): A Technical Essay on Overcoming “Dead Hang at Logo” via Repacked Firmware

1. Introduction

The Huawei LUA-L02, a budget entry-level smartphone powered by the MediaTek MT6735M quad-core SoC, is known for its fragility in software integrity. Among the most persistent firmware-related failures is the “dead hang at logo” —a state where the device powers on, displays the Huawei or Android logo, but proceeds no further. This essay outlines a systematic approach to reviving such a device using a repacked flash file, addressing bootloop causes, toolchain selection (SP Flash Tool), and the critical step of repacking to bypass partition corruption or mismatched preloader.

Device Not Found: Reinstall the MediaTek USB VCOM drivers. Try a different USB port or cable.

Symptoms of a Bricked Huawei Lual02:

Part 5: "Repack Done" – Bypassing MT6735M Authentication

The term "repack done" in firmware communities refers to modifying the SP Flash Tool scatter configuration and replacing the DA (Download Agent) to eliminate three errors: