Also, possible issues with the update, like crashes, might prompt the user to seek a specific version. If 125.5 was unstable, they might want to go back. But Apple doesn't allow installing older versions unless via backup. So maybe the user heard about 125.5 from somewhere specific, like a beta program.
I should mention Apple's guidelines about app distribution to emphasize that downloading from third-party sources can be risky. If the user is asking about a specific feature or bug fix in 125.5, checking changelogs on reputable sources like IGBetas or Reddit might help. Also, maybe the user is on an older iOS version that can't update past 125.5, so compatibility could be an issue. facebook ipa for ios 1255
I should also check if 125.5 is actually a version that exists. Sometimes people confuse the build number with the version. The current version of Facebook as of last check was 304.something. Wait, that's way higher. Maybe 125.5 is an old version. If it's an older version, some iOS versions might not support newer builds, so they might be stuck with an older version. Also, possible issues with the update, like crashes,