Default Hosin V60

hi friends my family bought a smartphone in China and I came across some problems revealing a bad deal. The first is that the phone only has two languages ​​(Chinese and English with Chinese) and i'm portuguese is the second that is a dual SIM is only running one (SIM 2) since SIM1 when you receive a call and answer, thee phone reboot. Another problem has to do with the 3G network does not get why you can not get internet through the network.
My question is whether there will be possibility of "flashing" the phone to take the Portuguese language as an option even if you stay with a version of Android older.
Curiosities phone. The Android store is Chinese and besides having much required no user to install applications, the problem is that half of the store is in Chinese and does not understand "****".