PS4 Error Code (SU-42477-4) | Fixed by Experts

One error that occurs in PS4 systems and stops them from functioning is Error (SU-42477-4). No matter what you try to work around it and avoid data loss, you will end up eventually reinstalling the PS4 system software from scratch. But is this the only solution out there to Error (SU-42477-4)? Well, the answer is NO, there are still a few things you can try before going to that option.

PS4 Error code SU-42477-4

Worse than that is when you have to replace the internal HDD of the PS4, but hopefully, you won’t have to.

Here you’ll learn why Error (SU-42477-4) has occurred and the available methods to fix it.

Common Causes of PS4 Error Code (SU-42477-4)

PS4 Error Code (SU-42477-4) may occur because of one of the following reasons:

  • Unsucccesful system update
  • Corrupted PS4 system installation.
  • A sudden power surge or outage.
  • A corrupted internal hard drive.

All these scenarios indicate that the PS4 Error Code (SU-42477-4) is a result of system data corruption which can be resolved via the following methods.

Fixing PS4 Error Code (SU-42477-4)

Here are a few methods that help you work around PS4 Error Code (SU-42477-4) and many users verified the validity of these solutions on forums and social media.

1. Power-Cycle your PS4

The data corruption can be in your system cache, so the best thing you have to do is to power cycle your PS4.

To do that, follow these simple steps:

  1. Turn off your PS4.
  2. Unplug the power cable from the power source, whether it’s a strip or wall outlet.
  3. Disconnect any peripheral attached to your console, such as a controller, headset, hard drive, etc.
  4. Keep your console disconnected from everything for about 5 minutes before connecting it again to power and turning it on.
  5. When prompted, connect the controller to the console and wait until the home screen loads.

This is the very first thing you have to do in order to troubleshoot the problem, even if it doesn’t work to resolve it, it’s still a good move for your PS4 health.

2. Try Re-installing the Update

Enter the Safe Mode and choose option #3 [Update System Software], and try to update it again via Internet. If it doesn’t work, do it via a USB storage device. You have to download the update patch on a computer first and save it on a USB storage device.

For more information on how to update your PS4 system software from Safe Mode, please visit this official PlayStaion page that illustrates this process in detail.

3. Rebuild the PS4 Database

The data corruption that your PS4 is undergoing and generating Error (SU-42477-4) can be due to a corrupted database. In Safe Mode there’s an option to rebuild the PS4 database. Try that option to fix Error (SU-42477-4).

4. Initialize PS4 & Reinstall System Software

This is the last resort before pulling out the internal HDD and trying to repair or change it. In the Safe Mode page, pick option #7 that says “Initialize PS4 (Reinstall System Software)

5. Repair Or Replace the PS4 Internal HDD

When the PS4 hard drive becomes old, it degrades and starts to generate errors due to its the mechanical design. But if you’re running out of money and can’t afford buying a new internal HDD replacement for your PS4, at least try to fix it.

You should pull out the PS4 hard drive from its drive bay and connect it to a PC and perform a FULL FORMAT on it. You can read more about this process in the PS4 HDD Failure Guide.


The PS4 Error (SU-42477-4) is luckily a software-related issue that indicates your console’s system software is corrupted. Yes, it can be a problem in the hard drive (i.e. hardware-related), but fixing it is a way too easy and it just requires to either repair the HDD or replace it.

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