to
save iphone 6 restore error 4013 and seeking for logic board solution, you can rule out some basic causes first as following:
1. Update iTunes to the latest version.
2. Update your computer to the latest OS.
3. Restart your computer and soft reset your iOS device.
4. Unplug and plug in your iOS device to try again.
Error Code 4013, 4014
Check the condition of CPU power supply or components on power supply rails.
Check if the CPU is pseudo soldered or damaged.