If those warnings don't deter, you though, you may want to read on. According to Phandroid, the Facebook Home APK should work on any device so long as it doesn't have a maximum resolution higher than 1280 x 768p. This excludes any phone with a 1080p display. You must also have a version of the official app pre-installed. You'll also need to be able to install third-party APKS.
If you want to give it a go, check out Modaco's download links for the full enchilada – you're going to need to download Facebook's "katana" APK, the separate "porca" messenger APK and the APK for Facebook Home. Install 'em as you would any other third-party APK and you'll be all set.
If you're rooted, you need to follow these instructions:
- Find the location of Facebook in your system partition (e.g. /system/app/Facebook.apk or perhaps /system/app/Facebook_Client.apk)
- Delete said file (after backing it up!)
- Reboot device
- Install Facebook from the Play Store then uninstall it
- Install above APKs
According to a Reddit user, if you leave it installed and set your regular launcher as the default, Facebook Home will function as a lockscreen only – pretty great if you'd like to keep your previous widgets.