Follow the link below (opens in a new window) and you will be presented with the following page.
Click on "Download Now"and save the file to your PC.
Copy the downloaded file (Temple Run Patcher.apk) to your phone and open it via any explorer (Astro File Explorer, for instance).
*Click on Temple Run Patcher.apk and install it.
*You might have to go to your phone settings and 'Allow installation of non-Market apps', under the 'Security' category.
Access Temple Run Patcher from your app tray and you will be presented with this screen.
Press 'Patch Temple Run' and select 'Yes' for the pop-up that appears next.
Open Temple Run as usual and go to the store.
Want me to make another step-by-step tutorial on anything specific? Comment below, let me know.