If your Jiayu G5S smartphone restarts after Camera Flash is used, then you have to apply this fix, by flashing a new boot.img file. Before starting, verify in Settings - About phone, and make sure that your phone build number looks like "JY-G5SW…" (see the picture above).
If your Jiayu G5S smartphone has Android Jelly Bean 4.2.2 installed, then download the fix from here or from here. If your Jiayu G5S smartphone has Android KitKat 4.4.2 installed, then download the fix from here or from here.
Model: Jiayu G5S smartphone
Platform: MT6592
Project: vanzo92_wet_jb9 or vanzo92_cwet_kk
Config_version: V1.1.2
Model: Jiayu G5S smartphone
Platform: MT6592
Project: vanzo92_wet_jb9 or vanzo92_cwet_kk
Config_version: V1.1.2
