A lot of Android development has to do with how similar the hardware is between two devices. Usually, when a ROM or other software is ported from one device to another, the devices share somewhat similar hardware. This makes the porting process easier than if the devices had wholly different hardware. This is why the Samsung Galaxy S III release was so revolutionary, because all the US devices carried nearly identical hardware and made development between them easier. Now, development may get easier for some older HTC devices, such as the Desire HD, HTC EVO 4G, and HTC Sensation because some of the hardware is more than similar, it’s identical.
XDA Forum Member peiminglei was recently able to replace the Desire HD camera with that of an EVO 4G without any issues. This prompted some digging and peiminglei uncovered that most of HTC’s devices from that generation sported the same 8MP camera made by the same manufacturer: OmniVision. As peiminglei explains:
So, I found the HTC phones which camera are 8M, with the manufacturer is omniVision，its camera drivers are ALL THE SAME!
So, dear Devs，maybe you can find the drivers for Sense4.0 android 4.0 from the other phones such as sensation XL or Sensation!
Given that the camera drivers are all the same, it is theoretically possible to grab the camera drivers from HTC devices that already have the latest updates and use them to port the latest updates to other HTC devices. If anyone could use it, it’s the Desire HD crowd. This is not the end-all-be-all of camera driver solutions, though, as there are a number of variables that still need assessed, such as the camera sensor information. Still, it’s a decent start.
For the full discussion, and feel more than free to add to it if you have further info, check out the original thread._________