PS4 error E-8210604A is a very common error.
Many users have been or currently are bothered by it.
In this post,MiniTool Softwarewill show you all it knows to get rid of this issue.

This issue can be solved.
In the following content, we will show you different solutions.
How to Fix PlayStation error E-8210604A?
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If these files are corrupted, some errors like E-8210604A will occur.
It is easy to remove these files: you just need to reboot your PlayStation 4.
After restarting, you could check whether the error code disappears.

If the issue persists, you might try the next solution.
Why rebooting a computer fixes problems?
Fix 3: Modify the DNS tweaks
PS4 error E-8210604A can be a server problem.

you might get rid of this kind of issue bymodifying the DNS prefs.
Here is how to do this on your PS4 and your gear.
You should find a suitable solution here.
The PS4 hard drive is a supported unit.
So, you’re free to use this software torecover data from a PS4 hard drive.