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This usually means a bad USB cable or port. Use an original Apple cable connected directly to the motherboard (not a USB hub). Reinstall Apple USB drivers via iTunes.

Some bypasses are "tethered," meaning if the battery dies, you must reconnect to a PC to boot it up again. iFrpfile All In One iCloud tool v2.8.4

: Most bypass functions require the device to be in a jailbroken state (often using tools like checkra1n ). This usually means a bad USB cable or port