Temple Run was released shortly after iOS 4 and iOS 5 gained popularity. Playing it on the original firmware offers several advantages over modern emulation:
Preserving iOS History: How to Find and Install Temple Run on iOS 4.2.1
For on legacy devices running iOS 4.2.1 , you can find the necessary .ipa files through community archives on the Internet Archive. Available Versions for iOS 4.2.1
only possess 128MB of RAM. To minimize asset crashes, close all background processes or perform a hard reboot before attempting a high-score run.
Open an older version of iTunes that still contains the "Apps" library tab.
For more legacy iOS apps, check out the iOS Obscura collection.
hosts several collections specifically for older iOS versions: Temple Run (iOS All Version) Archive