I have a prototype too. And the only thing i disappoint is camera noise when take picture even in sun light 
When I called Sony they told me to ship it in, but I didn't send it. They could potentially keep it. The Sony store will not replace it without proof of purchase. I had bought a white C6506 from Amazon but I didn't try to use that proof of purchase to get the prototype replaced. I ended up selling it on Cragislist.From reading your post I found my self with a prototype too, the IMEI : 004402450555853, I have some serious bugs, the proximity sensor doen't work unless I press hard on it,the screen always turns black whenever I make a call, and when record a video, there is always a noise in the audio like a distortion, and I don't know how to claim warrenty since I bought this phone from a friend.
When I called Sony they told me to ship it in, but I didn't send it. They could potentially keep it. The Sony store will not replace it without proof of purchase. I had bought a white C6506 from Amazon but I didn't try to use that proof of purchase to get the prototype replaced. I ended up selling it on Cragislist.
I think its too latePrototype phones have different hardware, so this is why it will likely not work with other official builds. Easiest thing to do is go back to the firmware that came with it. The more complex solution would be to port the touchscreen driver from the original firmware into 4.3 (along with other drivers that might be missing from the firmware you want).
Did you try installing 10.1.A.1.434? This is the one that 'fixed' the camera for me, so it might have the correct touchscreen driver for yours.I think its too late
i dont have the stock rom...
Thanks for the reply mate![]()
Hello, Thanks for suggesting but i cant find it.Did you try installing 10.1.A.1.434? This is the one that 'fixed' the camera for me, so it might have the correct touchscreen driver for yours.
No. That's for the Z1. This was a Z1 thread after allHello, Thanks for suggesting but i cant find it.
are you sure it is for the xperia sp?
well you can message to the Sony Dev and ask them to provide for youHello, Thanks for suggesting but i cant find it.
are you sure it is for the xperia sp?