Welcome @Atari-Frosch.
Good choice ![]()
The only times we have seen this before are when the cURL extension for PHP is not installed. On Devuan this is probably the php-curl package.
This should fix it on Devuan (instructions for other operating systems may vary), but do let us know:
sudo apt-get install php-curl- restart your webserver -
sudo /etc/init.d/apache2 restart - try the update again from within the dashboard, or wait for the site to retry it
The problem is not a corrupted zip file but an occasional error with the HTTP download library that is used when cURL is not available. More information here: