DESCRIPTION

Fixes low sound problem while calling.

Flash method:

1:Open flash tool “SP_MDT_exe_v3.1304.00_A2013.02.26_customer”

2: Choose the right file as the shows(in the file which you download)

3: Change the USB port to “Preloader →DA”, Click “start all”

4: Connect  GT99 with your pc using the cable

5:The only thing you can do is waiting now. It should take 3-5mins. It will show 100% at last.

Note: make sure you have install the driver of mtk6589 phone on your pc before you  flash it.

※Please make a backup of your device before installing or updating ROM