ROM LENOVO A830 – ROM Android 4.2.1
Update Official A830 Version: A830_S118_130621
Update Official A830 Version: A830_S115_130426
Official ROM Lenovo A830 Version: A830_S113_130414
Language support: EN/CN
ROM Install :
Unpack FlashTools, and Click on Flash_tool.exe
Select a the MT6589_Android_scatter_emmc.txt in ROM
Turn off your phone, remove the battery.
Press F9 (or hit Download button) 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.