Follow the sideloading guide above, accept the minor trade-offs, and enjoy Instagram as it was meant to be: a square grid of moments from people you actually care about. Just remember to refresh your AltStore installation every 7 days, or better yet, keep an old iPhone on iOS 16 as your dedicated "Instagram 1257 machine."
The keyword "new" in the search phrase is crucial. Users want a fresh copy of the old version—meaning an IPA file (iOS App Store package) that hasn’t been tampered with, modded, or flagged by Apple. They don't want a "cracked" version; they want the legitimate old build. instagram ios 1257 download new