The error “loader for iPhone9,3 3D101AP not found” indicates the device’s bootloader/firmware component identified as 3D101AP (linked to iPhone9,3 — iPhone 7, GSM) is missing or not found by the flashing/repair tool. This prevents normal firmware restore, custom firmware flashing, or low-level recovery operations. Below is a concise, structured guide covering causes, diagnostics, fixes, and precautions.
Unauthorized software modifications, such as jailbreaking or attempting to downgrade to an unsupported iOS version. Potential Causes loader for iphone9 3d101ap not found