The screen should remain black, but your computer will say it has "detected an iPhone in recovery." Try the restore now. Step 4: Update the "Handshake" Software
If you've tried different cables and verified your IPSW is signed, the method is your best bet for bypassing the 3D101AP error. This bypasses the OS entirely and talks directly to the hardware chips, forcing the loader to initialize.
Ensure your macOS is up to date, as the "loader" drivers are baked into the system updates for Finder. Step 5: Check for "Find My" Interference loader for iphone9 3d101ap not found better
If you are using a Windows PC, iTunes often fails to update its internal drivers automatically.
The "3D" in the error code often points to a data transmission interrupt. The screen should remain black, but your computer
This error typically triggers when the —the software that tells the hardware how to start up—cannot be located or verified by the flashing software. This happens for three main reasons:
The Apple servers are not signing the specific firmware version you are trying to install. Ensure your macOS is up to date, as
A data drop during the initial "handshake" between the phone and computer.
If you are seeing this while trying to flash or update an "iPhone 9" (which technically refers to the or certain internal identifiers), here is how to resolve it. Understanding the 3D101AP Error