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Lukas · September 28, 2021, 10:00pm

You are right that there was no database upgrades between the two releases:

matomo-org/matomo/blob/4.x-dev/core/Updates/4.4.0-b1.php

<?php
/**
 * Matomo - free/libre analytics platform
 *
 * @link https://matomo.org
 * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
 *
 */

namespace Piwik\Updates;

use Piwik\Updater;
use Piwik\Updates as PiwikUpdates;
use Piwik\Updater\Migration\Factory as MigrationFactory;

/**
 * Update for version 4.4.0-b1.
 */
class Updates_4_4_0_b1 extends PiwikUpdates
{

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So in theory downgrading should indeed just be overwriting the files with the ones from https://builds.matomo.org/

The only thing is that you might need to update the database version field:

UPDATE matomo_option set option_value = '4.3.1' where option_value = '4.4.1';

But I won’t promise anything and recommend backups before.