Here is lastest 20150213 Official ROM with Google Play and Multi-languages for Jiayu S3 3GB RAM, Please make sure your S3 is in 3GB RAM before flashing into.
Link: http://pan.baidu.com/s/1o6oPDt4 Password:iyh1
– Install Driver on your PC
– Unpack FlashTools, and run Flash_tool.exe
– Select the “MT6752_Android_scatter.txt” in ROM
– Wait file to be added into Flash Tool
– Turn off your phone
– Choose “Firmware Upgrade” in the Flash tool’s option
– 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 until “OK” pop up
– Finish !
If you want to root this phone, please read CellphoneMIC’s last Post