Download latest Android 4.2.2 firmware for JIAYU G5S smartphone

Download latest Android 4.2.2 firmware for JIAYU G5S smartphone from here or here. Download KitKat firmware from here. Download another Jiayu firmware from here.

Archive name: MP_mt92_s8_g5sw_jyt_jb9_sw_wcdma_ldata_mul
_tphone_20150123-214104_songlixin_PC
Archive file size: 441 MB
Model: JIAYU G5S smartphone
Support: Mediatek MT6592
Project: vanzo92_wet_jb9
Config_version: V1.1.2

Install ROM:
- Go into Recovery and Wipe All Data / Factory reset
- Run FlashTools
– Only if you have Android 4.2 on your SmartPhone you have to Format before (please SAVE NVRAM before)
– Only if you have Android 4.2 on your SmartPhone download also the preloader.bin e put it togheter the other files
- Select the contained MT6592_Android_scatter_emmc.txt inside ROM compressed file
- Wait file to be added into Flash Tool
- choose Option->Connection->USB->USB Speed->High Speed
- Turn off your phone, remove the battery
- Select "Download only"
- Connect your phone into the computer via USB data cable
- The process will start and various progress bar will be displayed
- At the end, a green circles will appear
- Only if you have Android 4.2 on your SmartPhone go into Recovery mode and Wipe All/Factory Reset
- You can now safely disconnect your phone and turn it on.
- Only if you have Android 4.2 on your SmartPhone you have to Restore NVRAM and reboot
- Finish!

Here you have a video tutorial on how to upgrade to KitKat another MT6592 CPU smartphone, E-ceros One.