Solution ERROR 4013 WITHOUT CHANGING THE NAND FLASH !!! Iphone 6, 6s, 7, 7 Plus, 8, 8 Plus, X, XR, etc.
Variant to error 4013 and unknown error (9) of iTunes on Iphone 6. (may apply to other models, please try). We advise you to review this in order to avoid unnecessarily changing the NAND FLASH memory. We invite you to subscribe to our channel to receive more solutions and information regarding Tablets, cell phones and GPS. Ah! do not forget to give a “like” !! For Paypal Donations: www.paypal.me/montevideocell Thanks a lot!!! .