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Error 4013 (NAND write failure) and 4014 (SEP communication timeout) during restore often masquerade as cable/PD issues when the true culprit is a degraded USB-C controller firmware state preventing stable DFU enumeration. Verify PD contract negotiation with system_profiler SPPowerDataType | grep -A 5 "USB-C" and force a deep SMC/TPM reset on Apple Silicon via sudo shutdown -h now followed by holding Power+TouchID for 20s post-GPT partition map verification (diskutil verifyDisk /dev/disk0). If Finder sync stalls at “Waiting for changes” during the restore payload phase, disable com.apple.finder.plist DisableAsyncCopy and kill fsck_apfs zombies hogging the snapshot mount (lsof | grep fsck_apfs). Swap to a Thunderbolt 3/4 passive cable rated 40Gbps/100W to eliminate PHY-layer signal integrity drops mimicking NAND errors.