4th Gen iPod Touch Facebook Messenger Issues
I have a 4th generation iPod touch with iOS 6.1.6 on it. I want to download Facebook Messenger on it because Facebook will soon be eliminating messaging from it's mobile app (and for the general convenience), but the messenger requires iOS 7, which my iPod is unable to get. My friend's 4th gen iPod touch with 6.1.6 can get messenger on it, but every time I try to download it, it says I need iOS 7. How can I access a version that is compatible with my iPod?
iPod touch, iOS 6.1.6