Bypassing authentication on MediaTek (MTK) chipsets has long been the "holy grail" for enthusiasts looking to unbrick, root, or flash custom firmware on their devices. For those working with the , the landscape is slightly more complex than older chips.
: Standard BROM mode often won't work; you typically need to use Preloader mode by connecting the device without pressing any hardware buttons.
Low-voltage fault injection on the PMIC rails during SHA256 compare in Preloader. Causes signature check to skip → Preloader enters download mode with partial auth disabled. Requires hardware trigger (e.g., Teensy 4.0 + MOSFETs), but works on many MT6789 devices where fault countermeasures are poorly implemented. mt6789 auth bypass better
To help tailor this guide further, what is the of the device you are unlocking? Share public link
Install Python 3 on your workstation, checking the option to Add Python to PATH . Run the command pip install pyusb pyserial json5 to configure the required libraries. Bypassing authentication on MediaTek (MTK) chipsets has long
┌────────────────────────────────────────────────────────┐ │ MT6789 Device Exploited │ └───────────────────────────┬────────────────────────────┘ │ (Keep USB Connected) ▼ ┌────────────────────────────────────────────────────────┐ │ Launch SP Flash Tool or MTKClient Interface │ └───────────────────────────┬────────────────────────────┘ │ ▼ ┌────────────────────────────────────────────────────────┐ │ ⚠️ CRITICAL STEP: Deselect 'preloader.bin' Partition │ └───────────────────────────┬────────────────────────────┘ │ ▼ ┌────────────────────────────────────────────────────────┐ │ Execute Firmware Write / Unbrick Image │ └────────────────────────────────────────────────────────┘
Legacy MTK (V5): [Device Off + Vol Buttons] ---> [BootROM Mode] ---> Kamakiri Exploit ---> Auth Bypassed Modern MT6789 (V6): [Device Off + No Buttons] ---> [Preloader Mode] ---> Heapbait/Carbonara ---> Auth Bypassed Better Open-Source Solutions: MTKClient V6 Integration Low-voltage fault injection on the PMIC rails during
To flash or repair an MT6789 device using the mtkclient software environment, follow this structured deployment process: 1. Prepare the Environment
What specific of MT6789 phone are you working with?
: Download SP Flash Tool V6 or higher, which officially supports the newer v6 connection protocols required by the MT6789. 2. Core Python Dependencies
Trying to use old "one-click" tools designed for legacy chips often leads to errors like "SLA/DAA Authentication Required." For a bypass, you must use tools that support the heapbait and carbonara exploits, which target the Preloader mode rather than BROM. Top Tools for a Better MT6789 Auth Bypass