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Error 4013 can occur on any Apple device, including iPhone, iPad, or iPod, while connected with a Mac or PC. This error does not let you continue to update or restore your device. In some cases, it can turn your device into a soft brick or put it under an infinite restart loop. The stereotype around iPhone errors is that they are almost impossible to resolve, which is not valid in this case. There are a few easy ways to recover your device and get it back running smoothly.