It sounds like you're encountering an error from a third-party repair or flashing tool (like UnlockTool or similar) when trying to work with an iPhone 7 model identifier 2N61AP — likely a typo or misreading of N61AP (iPhone 7 Global/Qualcomm) or DN61AP (iPhone 7 Global with different baseband config).
"Loader not found" UnlockTool , commonly misread or referenced as It sounds like you're encountering an error from
Driver Check: If the loader fails to send, check that your computer is using the 64-bit Apple mobile device drivers. You may need to disable "Driver Signature Enforcement" on Windows if the driver installation fails. Understanding Your Model Model Number ( ): This specific identifier indicates your device is an iPhone 7 (Black, 128GB) Go to product viewer dialog for this item. originally intended for personalized or replacement stock. The tool you’re using lacks a loader/binary targeting