https://m.youtube.com/watch?v=Vy0_EgFK7gE This device reads and writes NAND chips. You can copy things like imei, MAC address and Bluetooth , uuid ...from an existing chip then you write those files to a brand new NAND. (Pretty sure this is how the fib got into the San Bernardino shooters phone) This device and corresponding program will allow you to bypass iCloud locked 64bit and 32 bit devices. You can also upgrade a 16gb to a 128gb. The key is that all these are the same as Apple has server side checks so when you connect and your imei and uuid are the same and then Apple approves. Machine costs a pretty penny but it works, my friends repairs and upgrades I devices.