Default [Q] Jiayu G4

Hi All new to this forum.


i have a Jiayu G4 MT6589 T
love the phone
Have 2 problems
the mic sound dosent work (people cant hear me when i call)
And sometimes get "sd card damaged", its not works in other phones
the shop where i bought it online will take it back under guarentee. but wants me to root and reflash the phone.to see if it will solve the problem first.
I have downloaded the Jiayu.es App looks good but its in spanish.
My question is does anyone have an English translation or another option with a step by step guide.
i have also downloaded mobile uncle.
My local repair shops wont touch it as its not a mainstream phone.

Thanks in Advance
Don