PS4 error code
PS4 Error SU-35931-1: What It Means and How to Fix It
SU-35931-1 in one line: The downloaded update file is damaged.
Try this first: restart the PS4 and download the update again.
Try this first: restart the PS4 and download the update again.

What SU-35931-1 means
PlayStation Support says: “System software update data is partially corrupted.” (official page)
Sony's official PS4 page for SU-35931-1 gives the steps below in this order. We summarise it; we did not test on hardware.
Likely causes
- An unstable network during the download.
How to fix SU-35931-1, easiest first
- Download again
Restart the PS4 and download the update again. - Update by USB
If that fails, install the update from USB in Safe Mode. - Contact support
If the update fails many times, the console may need service.
| Step | What to do | Source |
|---|---|---|
| 1 | Download again | Official |
| 2 | Update by USB | Official |
| 3 | Contact support | Official |
When to contact support
If Sony's steps don't fix it, contact PlayStation Support.
SU-35931-1 FAQ
What does PS4 error SU-35931-1 mean?
Sony says: "System software update data is partially corrupted." The downloaded update file is damaged.
Sources
- PlayStation Support: PS4 error SU-35931-1
- PlayStation Support: Safe Mode
- NextPlayIntel PS4 troubleshooting guide
Other PS4 error codes
- CE-34878-0: A game or app crashed on the PS4.
- CE-30005-8: The PS4 couldn't read its hard drive or the disc drive.
- CE-34335-8: The PS4 can't find its hard drive.
- CE-35486-6: The PS4 can't read the disc.
- CE-32894-6: The PS4 lost its connection to the server.
- NW-31201-7: The PS4 couldn't connect to the network or the game's server.
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