IOS – iPhone 6s running iOS 10 claims watchOS 2.2.1 is up to date when I attempt to update the Apple Watch

To enter DFU mode:

1. Make sure the phone is on and iOS fully loaded, and iTunes is closed.
2. Plug the phone into your computer using the Apple proprietary cable.
3. Once plugged in, turn your phone off by holding the power button.

4. When the phone is completely powered down, perform the following sequence:

   1. Hold the power button for 3 secs.
   2. Without letting go of the power button, press and hold the home button for 10 secs.
   3. Without letting go of the home button, release the power button for another 10 secs.

Ignore what's happening on your screen, just time the sequence. If you are not succeeding, then you are not timing the sequence properly. There is only one way to enter the device into DFU mode. The one provided by Redsn0w is the correct one.

The solution should be to wait until the battery is drain out and the plug it to the power source to turn it on. Everything should be back to normal.

BUT in my case, I can't wait until the battery is drain out so I open the iphone by myself then unplug the battery (~4 hours ago). Everything should be back to normal BUT in my case, it made my iphone "broken". I did a mistake (I was separating the display from the front panel!!) when I tried to "suck" the front panel. Sometimes there are some weird mark on the top of my display and touch on that area is not working :(

Though I'm not sure, is that happened because of my mistake during opening the front panel OR because I forcibly unplug the battery when the iphone is still ON.

So, it is not advisable to open the iphone by yourself. I did that because I really need it at that moment and I can't wait until the battery is drain out (even until now it still 64%).