Hi, my girlfriend has an iPhone 4s that's on iOS 6.1.3, and she just got a FitBit for Christmas. FitBit App only works on iOS 7 or higher. The software update offered on her phone is for 8.1.2, and she doesn't have enough storage space on her phone for it, and we haven't been able to create enough space. I have a backup of my phone on my MacBook that's iOS 7.0.6. I have a program that can extract the iOS from the backup. Is there a way to update her phone to that extracted version? (I backup both of our phones on this MacBook.) She also has an iPad 2. FitBit app only works on newer iPads than that... Frustration with this has me about to return the FitBit to the store!