So,my brother bought a smartphone from Quadro in a official supermarket in Croatia(InterSpar).
Only I realised that this phone is a straight s4 clone,but the flashlight is placed on the right side to the camera.
First install ADB drivers for your smartphone and then
try to root it with "Kingo Android Root": download.cnet.com/Kingo-Android-Root/3000-2094_4-75996768.html
It worked on my SQ-40E86H.
My phone was at the repair shop,and they updated the firmware from R04 to R08.
Google Chrome wasnt force closing anymore(verified with 3 Quadro SQ-50E85F)
There was a new category in settings,dedicated to the proximity sensor(swipe homescreen pages with waving,etc.)
Framaroot was rendered useless(probably because they "covered the security hole" which let us root it before the R08)
After 3 days and testing of over 12 root tools,i finally managed to find GeniusRoot.It didnt use SuperUser nor SuperSU,it uses KingUser instead.KingUser works the same way as Chainfires Superuser applications,but has a better UI :P
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer?