The error code you provided, CE-34878-0, doesn't pinpoint any specific problem. It's an error code that simply indicates a crash. You may have to try troubleshooting.
PlayStation recommends doing the following. Try these and see if the problem persists:
Make sure the PS4 is updated
Unplug your PS4 camera and deactivate face recognition, if applicable.
Reinstall the original HDD, if previously replaced
Which update was installing? An update to an app in your library, or a software update?
The update of the game could have a bug, if it only occurs in one game. You could report it to the developers, and they could fix it.
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Based on your completed guides, it seems you have recently replaced the HDD. Try reinstalling the original, as PlayStation suggests.
The error code you provided, CE-34878-0, doesn't pinpoint any specific problem. It's an error code that simply indicates a crash. You may have to try troubleshooting.
PlayStation recommends doing the following. Try these and see if the problem persists:
Make sure the PS4 is updated
Unplug your PS4 camera and deactivate face recognition, if applicable.
Reinstall the original HDD, if previously replaced
Which update was installing? An update to an app in your library, or a software update?
The update of the game could have a bug, if it only occurs in one game. You could report it to the developers, and they could fix it.