To understand the issue, it is helpful to break down the technical identifiers provided in the error:
The identifier refers to a specific hardware revision or board configuration often associated with development or prototype-style builds, rather than standard retail model numbers. Because Apple officially skipped the "iPhone 9" name—moving directly from the iPhone 8 to the iPhone X—this error usually surfaces when using tools designed for older iOS 9 software or "budget" legacy models. Steps to Resolve the "Loader Not Found" Error Verify Device Compatibility loader for iphone9 3d101ap not found
: You might be trying to flash firmware meant for the Global model (iPhone9,1) onto a GSM-only model (iPhone9,3). Server Connection Issues Resolved: "Loader for iPhone9 3D101AP Not Found" –
This error indicates a mismatch or missing file in your diagnostic software's "loader" directory. Missing Ramdisk/Loader File Connect iPhone 7 to computer