iPhone Error 4013 and Error 4041 Data Recovery

What Happens When Apple's Steps Do Not Clear Error 4013?

Apple's steps change the variables outside the phone: the computer, the cable, the port, the software version. Once you have changed every one of those and the same code lands, you have eliminated the outside of the phone. The remaining variable is the board, and no restore attempt reaches it.

This is the point where repetition turns into risk. Online threads suggest running DFU restores back to back, and each one is another attempt to complete an operation that erases the device. A restore that finally succeeds is not a recovery; it is the wipe.

It also matters if liquid was ever involved, because corrosion keeps spreading while a phone sits on a desk between attempts. The water damage path covers what that does to a board, and the storage-chip path covers the boards that never enumerate at all.

What Are Error 4041 and Error 4042?

Apple documents neither code. Both are absent from Apple's update and restore error index, so unlike 4013 there is no published cause, no published step list, and nothing to quote. A phone that keeps failing a restore is diagnosed by measurement on the bench instead.

Stop troubleshooting when the checks stop changing the outcome. If a current computer, a different Apple-certified cable, and a different machine all came back clean and the same 4041 or 4042 still lands, more restore attempts are not going to change it, and each one runs a write at the storage you want back. What is left is a measurement on the board, not a setting on your computer.

Send it in sooner if liquid was involved, or if the phone stops powering on at all between attempts, because corrosion keeps spreading while it sits. Evaluation is free, and if we can't get the data off, you don't pay.

Board-level work on a Face ID model runs $750 whichever code brought it in, and all of it happens in-house at the Austin, TX lab alongside the rest of our board-level iPhone data recovery work.

Does Finishing the Restore Erase the Data on Your iPhone?

Yes. Apple's own instruction for these codes is to click Update, which it describes as reinstalling the software and keeping your personal data. Restore is the other button, and it reinstalls iOS onto an erased device. The erase belongs to the Restore path, so every retry of a failing restore is another attempt to run the step that clears the phone.

Recovery mode by itself takes nothing off the phone. It is a prompt with two buttons, and the button you press decides the outcome. Update writes a fresh copy of iOS and leaves user data where it sits. Restore clears the device first, then installs iOS onto an empty phone, and the setup screen that follows is the phone asking for a backup because there is nothing left on it to load.

Update

Reinstalls iOS over the install that is already there. Photos, messages, contacts, & app data stay in the NAND as encrypted data and decrypt in place once the phone boots and you enter your passcode.

Restore

Erases the device, then installs iOS onto the empty phone. The key hierarchy that unwrapped your files is wiped with them, so what remains in the NAND is ciphertext nobody can turn back into photos.

Apple's cable, port, and computer checks exist to separate a computer problem from a phone problem. They are not a technique for forcing a restore through. If you keep swapping cables and pausing security software until one attempt finally goes the distance, that completed restore is what takes the data, not the error that kept stopping it.

What state a specific phone is in after a failed restore is not something the error code tells you. A restore that died partway through does not report how far it got. That is a bench question, answered by measuring the board and reading what the phone still holds, not by another attempt from the same computer.

Error 4013 Does Not Mean Your Data Is Gone

A 4013 is a restore that did not finish, not a sign your data was erased or is floating around freely readable. The photos, messages, & contacts sit intact in the NAND as encrypted data. What failed is the path that lets the phone boot & talk to your computer, which is a repair, not a loss.

On A7-and-later iPhones (iPhone 5s onward, which covers every FaceID model), the storage is protected by hardware Data Protection. Decryption needs three originals together: the paired NAND, the original SoC with its Secure Enclave, & the owner's passcode. Those pieces have to work as a set on the original hardware.

That's why pulling the memory chip off the board does nothing on these devices. A removed NAND yields only ciphertext, because it is cryptographically paired to its own SoC; a blank or foreign NAND swapped onto the board can't be decrypted either.

The recovery path is to repair the original board so the phone powers on, then let you enter your passcode so it decrypts its own data in place. We never work around the passcode or the Secure Enclave, & we don't need to.