Here is where most dreamers fail.
, Apple’s support for their device ended at (or later 12.5.x versions). This is a solid, classic device, but it poses a major problem in 2026: modern apps, including Facebook, require iOS 13 or higher.
Because Facebook updates so frequently, unless you stopped using the app in 2018, your "last downloaded" version is likely v.250+. This method rarely yields 1255 anymore.
To start, go to on your iPhone. This will tell you exactly which version of iOS your device is running. facebook old version for ios 1255 install
If your device is so old (iOS 11 or older) that even the last compatible version no longer works properly, or if you are concerned about the security implications of using an unsupported app,
Several third-party tools and services claim to help users download older versions of apps. If the official method fails, these can be an alternative, but you should proceed with extreme caution.
Beyond compatibility with an aging iPhone, some users actively seek older versions of Facebook for specific reasons: Here is where most dreamers fail
For your safety, you should rely on (like the App Store's built-in system) whenever possible. Be extremely cautious about downloading IPA files from third-party, unofficial websites, as they can be easily modified to contain malware or spyware that could compromise your personal information and device security.
Given the specific mention of "1255", I should also search for that version specifically. search results cover various aspects but lack direct information on version 1255. I will need to open some of the more promising results to gather details on methods like using iTunes, Charles Proxy, or sideloading tools. search results provide various methods for obtaining older versions of Facebook for iOS, including using iTunes with Charles Proxy, using Cydia Impactor, and using the App Store's "Purchased" method. However, none of them specifically mention version 1255. The article should cover the context of why users might want an old version, provide safe installation methods for any old version, discuss the specific historical context of version 1255, and include security and troubleshooting sections. The user's question has high authority requirements, I should prioritize using reliable sources and clearly indicate when information is based on general knowledge. I'll organize the article with an introduction, reasons for using old versions, instructions for installation (using official App Store purchase and iTunes method), and a section on version 1255. I'll also include risks and a concluding summary. Facebook Old Version for iOS 1255 Install: A Complete Guide
: Ensure you are signed in with the Apple ID you previously used to download Facebook. Because Facebook updates so frequently, unless you stopped
: Full access to communities you manage or follow. Notifications : Real-time alerts for tags and messages. Marketplace : Buying and selling remains functional.
Download Cydia Impactor for Windows or Mac, connect your iPhone, and drag-and-drop the IPA file into the tool's interface. You'll be prompted to enter your Apple ID credentials (using an app-specific password is recommended for security). The tool will sign the app and install it onto your device.
You can install an older version of iTunes (version 12.6.5 or older) on a Windows PC or Mac. By routing your internet traffic through a debugging tool called Charles Proxy, you can intercept the App Store request and force it to download a specific, older version string of Facebook. This app file (.IPA) can then be synced to your iPhone via iTunes.