Frank Bueltge

The plugin is not longer supported and is not maintained.
Security your WordPress-Installation and eliminate or replace your wp-version and database-version on easy way with a small plugin, also on Feed and style- and script-urls.
If you’re running an older version of WordPress, anyone can view source to see what attacks might work against your blog. This plugin replace the WP-version with a random string < WP 2.4 and eliminate WP-version > WP 2.4.
Please visit <a href="http://bueltge.de/wordpress-version-verschleiern-plugin/602/" title="Replace WP-Version" rel="nofollow ugc">the official website</a> for further details and the latest information on this plugin.
» more security-informations: <a href="http://wordpress-buch.bueltge.de/wordpress-sicherer-machen/30/" title="WordPress sicherer machen" rel="nofollow ugc">WordPress sicherer machen</a> (german)

Replace WP-Version

Replace the WP-version with a random string < WP 2.4/5 and eliminate WP-version > WP 2.4/5, also on Feed and style- and script-urls

Reisetiger

<h4>WordPress Core Downgrade/Update</h4>
EN: The plugin “WP Downgrade” forces the WordPress update routine to perform the installation of a specified WordPress release. The Core Release you specify is then downloaded from wordpress.org and installed as would any regular update. You can permanently stay on a previous version of your choice or update selected.
The user Gahapati describes it so much better than I can. (Thank you!)
<blockquote>
WP Downgrade | Specific Core Version has the potential for becoming one of the best-loved plugins among those, who simply cannot update to the latest WP release.
In the past the latest WP release was the only offering for WP’s Automatic Update routine. This left all those behind, who have to wait with Core updates, until their plugins become compatible with newer WP releases. When this finally happens, more often than not there has already been yet another Core update. In the end a dreaded, cumbersome, time-consuming and error-prone Manual Update used to be the only way to go.
With WP Downgrade | Specific Core Version this is now a thing of the past. Anyone who lags behind the latest WP release is now able to use Automatic Updates even to lower WP versions. What WP Downgrade does simply is to make WP believe that the version you want to update to actually is the latest version. Because of this, there is no difference to updating to the latest version.
For security reasons I think this is a must-have plugin for anyone running a “seasoned” WP installation, and it actually should be a Core feature to be able to update not to the latest WP release exclusively but instead to have a choice among secure releases.
</blockquote>
New advanced option: You are now able to manually edit the download link, if necessary. This allows, for example, a change of language for wp-core. Or you can get the release from another source.
DE: Das Plugin “WP Downgrade” zwingt die WordPress-interne Update-Funktion, ein bestimmtes WordPress-Release zu installieren. Das definierte Core-Release wird wie ein reguläres Update von wordpress.org bezogen und direkt installiert. 
Das klappt wie gewohnt per Update-Button im Admin-Bereich oder per Auto-Update. Die Versionsnummer kann sowohl höher als auch niedriger sein als die aktuell installierte Version. Somit ist also auch ein Rollback auf frühere Releases möglich. Dein WordPress wird solange auf dieser Version bleiben, bis du eine neue Versionsnummer in WP-Downgrade hinterlegst (oder bis du die Versionsnummer leerst oder das Plugin deaktivierst).
<h4>Achtung: Nutzung auf eigene Gefahr!</h4>
WP-Downgrade funktioniert normalerweise prima. Trotzdem ist ein Versionswechsel immer ein riskanter Eingriff! Du solltest auf jeden Fall vorher ein Backup deiner Dateien und der Datenbank anlegen! Ich übernehme keinerlei Gewähr für deine Installation und werde auch keinen Support leisten.
<h4>Plugin hilfreich? Sag Danke!</h4>
Ich stelle das Plugin kostenlos zur Verfügung, freue mich aber sehr über Spenden oder einen Link auf meinen Reiseblog <a href="https://www.reisetiger.net" title="Reisetiger" rel="nofollow ugc">https://www.reisetiger.net</a>! 🙂 
Bitte bewerte WP Downgrade, wenn es für dich nützlich ist!

WP Downgrade | Specific Core Version

Automatically downgrad or update to any WordPress version you want directly from the backend.

Replace WP-Version vs WP Downgrade | Specific Core Version