The error often triggers during low-level tasks like ramdisk bypasses or firmware restores when the following conditions occur:
The absence of a valid loader prevents the "Chain of Trust" from establishing. In Apple’s security model, each step of the boot process must be cryptographically signed by the previous step. Without the loader, the CPU remains in a DFU (Device Firmware Upgrade) state or a "Recovery Loop," as it cannot find the instructions required to initialize the hardware components. Conclusion Loader For Iphone9 3-d101ap Not Found
Then reconnect the device in DFU mode. On Windows: Uninstall Apple Mobile Device USB Driver in Device Manager, reboot, and let iTunes reinstall. The error often triggers during low-level tasks like
Once the custom loader is uploaded, the “not found” error becomes irrelevant— you are the loader. Conclusion Then reconnect the device in DFU mode
: The tool being used does not have the specific loader files for the "D101AP" board revision.