"Repacked" software is often modified to bypass license verification. In the process of cracking the software, vital files (such as loaders, boot files, or exploit payloads) are often deleted, corrupted, or not included in the redistribution to reduce file size or due to sloppy cracking methods. The software looks for a file specific to the N61AP hardware, but the file is missing from the cracked installation folder.
UnlockTool frequently updates its server-side files. If your local installation is outdated, it may miss the specific loader for the n61ap (iPhone 7) logic board.
folder. If the folder is empty, the tool has nothing to "load" into the device's temporary memory.