Use the or "IPWNDFU" option within the UnlockTool interface first.
: UnlockTool sometimes requires an active internet connection to verify and download small patch components during the process. All Ramdisk iPhone - Update UnlockTool loader for iphone7 2n61ap not found unlocktool patched
The most common reason for a loader failing to send is a bad state. Put your iPhone 7 into DFU Mode . In UnlockTool, go to the Apple tab. Click on [DFU] PWNDFU . Use the Gaster exploit option. Use the or "IPWNDFU" option within the UnlockTool