The term DA stands for Download Agent, also known as Secure Boot file. These files are essential when flashing or unlocking MediaTek-based smartphones that have strict boot security measures. Without the appropriate DA auth file, direct flashing or unlocking may fail on secured devices like the Tecno KB2. Many smartphone unlocking tools automatically detect the model and perform tasks accordingly, but when your specific device model isn’t listed, or flashing errors occur, using the correct DA file becomes necessary.
How to Use DA Auth (Secure Download Agent) Files on Popular Tools like CM2, AVG, UMT, and SP Flash Tool
Using DA File with SP Flash Tool
- Ensure you are using FlashTools version V5.1812 or newer for compatibility.
- Open the SP Flash Tool application.
- In the top panel, locate the Download Agent section and click Choose.
- Browse and select the Tecno KB2 DA auth file you downloaded.
Using DA File with Avengers Android MTK
- Launch Avengers Android MTK.
- In the main interface, locate the Download Agent section on the left sidebar.
- Click Select Custom Loader and choose your DA auth file.
Using DA File with Ultimate Multi Tool MTK
- Open Ultimate Multi Tool MTK.
- Navigate to the relevant section for flashing or unlocking.
- At the top, find Select Download Agent and click Custom DA.
- Load your downloaded DA file.
Using DA File on CM2 Infinity (CM2MT2)
- Launch CM2MT2.
- Open the Platform Main tab.
- Enable the option labeled Custom settings DA Auth Cert.
- Click the DA button and browse to select the required DA file.