This is very simple tutorial on how to flash (debrand) yours A2 (DB3150) phone with new A2UPLOADER.
So,let's start.
1. Download a2uploader.rar from here A2UPLOADER-download(also contain Gordon's Gate Setup) and unpack
2. Run Gordon's Gate Setup and install flash drivers (if you already didn't install)
3. Download MAIN, FS and custom files for your phone (all needed files you will
find here in download section - firmware(MAIN and FS) or custom files (CUSTPACK)
4. Run A2UPLOADER.
5. In ADD files put MAIN and FS for your phone.
6. Press "..." button from "MISC Files" and put the custom file in ".zip" format.
7. Press "Flash" button and insert USB cable, while holding "C".
8. When you see "elapsed" in the left pannel, you can unplug the USB cable.
End this is it.Enjoy