C905 - Determining the Status of my Phone

[riders4sia]

first, be confirmed if your phone has been fully unlocked or else you would end up with "Insert Correct Simcard" or need to purchase unlock credit.
If already fully unlocked, you can use the latest generic flashfile which you can get it here at Download section.
Rad instruction here : A2-DB3150 Flashing but before flashing, post the identify log here for complete details about your phone. do not worry