If you have an HTC developer unlocked ("jailbroken") phone, then this trick may be for you: evidently you can convert PDF books into .PRC files that can then be sideloaded on the device and viewed with Amazon's Kindle app. The reason? As DominikZ over at XDA notes, Charles Petzold's eBook "Programming Windows Phone 7" which is 100% free, costs $22.53 on Amazon (we actually see two versions, one XNA, one Silverlight, but both do cost ~$20 for the Kindle edition). Through this trick, you can convert the free PDF version of the book to a Kindle compatible one.

The task is not too difficult, but hardly elegant. As noted, only HTC devices can do this right now because the trick relies on TouchXplorer, which doesn't work to well on non-HTC devices.:

  • Download MobiPocket Creator or any other Program, capable of converting pdf to prc.
  • When the conversion is done, apply the registry hack, so that your phone will show up in Windows Explorer.
  • Copy the newly created *.prc file to your phone. If not already done, install TouchXplorer and go to My Documents\Zune\Content\0400\03 and cut the newly created file (It will be renamed to*.z)
  • Paste it to Applications\Data\48195FB4-EE0E-9264...\Data\IsolatedStore\kindle
  • Now rename the file so you will remember the it (e.g. programming.prc).
  • Start up Kindle and the newly added book should be available.

Like we said, not easy but once you do your first one, the rest are a breeze. Conversion usually takes less than five minutes from our experience and this seems a great way to load school PDFs, free eBooks, etc. onto your Windows Phone.

Source: XDA