To resolve the "" error for the iPhone 7 (n61ap) in Unlocktool, you need to manually point the software to the correct Ramdisk file or use the integrated repair feature found in certain "REPACK" versions.
Replace or obtain correct loader
While N61AP is the iPhone 6, there are subtle hardware revisions. If the specific eMMC or Baseband processor revision on the logic board requires a slightly different exploit parameter not included in the "Repack," the tool will fail to find a matching loader. --- Loader For Iphone7 2-n61ap Not Found Unlocktool REPACK
Elena stared at the pale blue glow. The phone wasn't hers. It belonged to a stranger — a boy who had died two weeks ago. His name was Liam. He was seventeen. He’d jumped from the parking garage behind the mall, and no one knew why. To resolve the "" error for the iPhone