It sounds like you’re hitting a very specific wall with a legacy iPhone or a specialized developer build. The error code 2d11ap isn't a standard consumer iOS version, which usually points to one of two things: you're working with an internal Apple "SwitchBoard" prototype (often called an iPhone 9,x in hardware terms) or you're deep into the world of jailbreaking and custom bootloaders.
He needed the iBSS and iBEC files—the intermediate bootloaders. He couldn't download them from Apple directly because they were signed only for specific "windows" of time, and the window for this specific legacy restore had closed months ago. loader for iphone9 2d11ap not found better
$ ideviceenterrecovery iPhone9,2
[INFO] Device: iPhone9,2 (2d11ap)
[WARN] Loader for 2d11ap not found – trying fallback d211ap
[INFO] Using d211ap_loader.bin (compatible)
[SUCCESS] Device entered recovery mode
While a specific loader for iPhone 9 2D11AP may not be readily available, there are several potential solutions and workarounds: It sounds like you’re hitting a very specific
Nillkin CP+ Max: A premium Nillkin Full Coverage option that provides a precise fit for the iPhone 7's 4.7-inch display with 9H hardness. While a specific loader for iPhone 9 2D11AP
palera1n is currently the best checkm8-based jailbreak for iPhone SE 2020 (iPhone9,2). It fully supports 2d11ap and includes the necessary loader in its built-in resources.