DESCRIPTION

ROM Mobile POLYTRON W7550 - ROM Android 4.2.1

ONLY MT6589

Official ROM POLYTRON W7550 version: WBW5310PT_0202_V5853 – gionee89_dwe_jb2-user 4.2.1 JOP40D

Gapps include – No Rooted

Language support : Multilang

ROM Install :

- Unpack FlashTools, and Click on Flash_tool.exe
- Select "scatter-Loading" and search MT6583_Android_scatter.txt in ROM
- Wait file to be added into Flash Tool
- Select "Download Only" or if upgrade "Firmware upgrade"
- Turn off your phone, remove the battery (if the battery is removable) and replace it after some seconds (and don't turn on the phone).

- Press “Download” button to start
- and connect your phone into the computer via USB data cable.
- The process will start and a red progress bar will appear after color purple, yellow.
- And green circles display
- Finish !

- You can now safely disconnect your phone and turn it on.

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