Timing is critical for the A10 chip to accept custom boot commands. Use PWNDFU first
If your client is outdated, it will not recognize newer directory mapping.
UnlockTool requires external data files (Ramdisks) to communicate with Apple's A10 Fusion chip in DFU mode.
Follow these methods to restore functionality and push past the "loader not found" screen. 1. Download Official Ramdisk Files
Troubleshoot like Apple Mobile Device Support errors.