Security alert message after updating to 5.1 RESOLVED

[StefanSultanov]

Elxis Defender won't let me into my Elxis installation.

I saw https://www.elxis.org/blog/update-elxis50-to-51.html article and fulishly decided to update my Elxis to 5.1 with Elxis Defender still on.
Apart from the General protection rules I had the file system protection activated too, because my defender_ban.php changed. I presume hacker attacks.

I followed the guide and updated the com_extmanager folder, to which the site displayed the following message.
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Security alert
Request dropped!
A protected file has been modified! If you dont know what to do consider Elxis documentation or visit Elxis forums for support.
Reference code: SEC-DEFF-0049
-------------------------------------------------

Since the message appeared I tried the following:

1. Reverted back to the old com_extmanager\ folder
2. Uploaded my old local copy of defender_ban.php, as I always had done if Elxis baned my IP.

Needless to say, there was no effect.
Please help to regain control. The site is linked below:

https://goldenratiomainecoon.co.uk/

Also I may have tweaked the session control to not allow access to elxis core before authentication, or something along those lines.

[StefanSultanov]

Elxis Defender emailed me to tell me to delete the website hashes and it worked!!!

I have regained control over the website, but it says it is the old 5.0.

I am amazed by the work that went into building the Elxis system.

Good work!

One last question:
Is there a specific security setting that is ideal for painless update?

[webgift]

Bravo @StefanSultanov!
You should update the database as well. Please update the database and
always take a full backup before proceed any update process.

[StefanSultanov]

How do I update the database?

This step wasn't mentioned on the update guide I saw.

[webgift]

Go to: Extensions menu item at left -> Check for updates ->
find the installed version and click on the relative link below.

[StefanSultanov]

Thank you!