Hello, I bought the Chinese phone C702 but the keypad is not working. Actually, the buttons can be pressed but nothing happens (when the keypad is locked, if I press any button it says to press the left soft key etc) and I can only turn the phone on. I found in youtube a video with a guy who upgraded his Chinese C702 and I was wondering if upgrading its firmware the buttons will work. Now, I want to ask you what is the difference between these 2 .dtf files: djawir Team Download Area In addition, I found the info for my phone and I saw that in the version that the model of the phone is E880.. Maybe this is the problem, the firmware is not correct? And the BB Chip (I don't know what is this but I am writing it here so that you tell me if this is the problem) is MT6225, E03. Thank you.