I have an unresponsive Apple TV and I believe It is loaded with a signed 5.2.1 IPSW (Uploaded using snowbreeze). When I use iTunes to update and restore, I encounter error 1600 and I have read through:
Different cables have been used on a MAC and PC. I am unsure if the Apple TV is stuck in DFU mode or Recovery mode. I have used TinyUmbrella to try and fix recovery mode but it doesnt even see it there. Anyone have a suggestion? Thanks
i am just like you, i can not believed it myself, i bought 3 micro usb cables they all working at beginning, but last two days that try to JB ATV2 for my friend, only one will work, the other two give me nothing but error 1600, 1603 and 1604, finally one cable worked, i don’t get it myself.
Update - I finally got it to enter recovery mode properly using TinyUmbrella and the ATV is now restored.
I used the same cable, switched USB ports, let the error for 1600 appear then I closed iTunes, through File> Quit iTunes. When I opened iTunes again, it saw the device in Recovery mode and it somehow made it through the process and it looks good.