Confirm device model and state
If you are stuck on this error, follow this guide to resolve the loader issue and complete your process. Understanding the 2-n61ap Error
Loader Error for iPhone 7 (N61AP) in UnlockTool Device: iPhone 7 (Model N61AP – Global/GSM) Software: UnlockTool (Service software for FRP bypass, network unlock, and repair)
If the "Sending iBSS/iBEC failed" error persists, try disabling on your PC and rebooting before trying again .