Rom: Lenovo Offical S123 2013-08-14
Language: Multilanguage (Global/ROW)
Rooted: Yes.
Gapps (Google Play): Yes.
Recovery: 3e Lenovo (Stock)
Supports use of SD as internal memory
Installation:
- Unpack A850 Stock S123.zip
- Open SP_Flash_Tool_v3.1320.0.163
- run Flash_tool.exe
- select MT6582_Android_scatter in "rom dump" folder
- Choose Option -> USB Mode, click USB Mode
- Choose Option -> DA DownLoad All -> Speed -> High Speed -> click High Speed
- Check option "DA DL All With Check Sum"
- Turn off your phone, remove the battery.
- Connect phone via USB
- Click Firmware -> Upgrade
- When a green circle appears, you can disconnect USB, reseat the battery and power up your device. It will take several minutes for it to boot up.