With a jailbroken iOS 5.1.1 device, install from Cydia (by InvoxiPlayGames). This tweak tricks the App Store into letting you download the last compatible version of any app you already own. While this does not give you a raw IPA file, it installs the app directly.
Installing these files often requires a device because standard modern tools like AltStore may not support firmware as old as iOS 5. 1000+ IOS 5.1.1 and earlier IPA files - Internet Archive ipa ios 5.1.1
Subway Surfers (v1.0.1 - v1.7.3), Angry Birds (v1.2.0+), Cut the Rope , Minecraft Pocket Edition (0.3.0 - 0.14.0), and Bloons TD 5 . With a jailbroken iOS 5
: A massive vault of classics like Angry Birds , Fruit Ninja , and Cut the Rope specifically for iOS 5.1.1. Installing these files often requires a device because
Deep text for typically refers to the legacy era of "untethered" jailbreaking and the specific hardware limitations of 2012.
iOS 5.1.1 was the last version to support the original 30-pin connector devices fully and the first to deeply integrate iCloud. It was also a golden era for jailbreak tweaks (Absinthe, Redsn0w). However, due to ARMv6 and ARMv7 architecture shifts, apps built for iOS 6 or later will generally run on iOS 5.1.1. You need IPAs specifically compiled for iOS 5.0–5.1.1.