Update Problem bei Hika Shop Essential

-- url of the page with the problem -- : shop.eltirol.at
-- HikaShop version -- : 2.6.3
-- Joomla version -- : 2.6.0
-- PHP version -- : 3.4.11.1
-- Browser(s) name and version -- : FIREFOX 49.01
-- Error-message(debug-mod must be tuned on) -- : Fatal error: Maximum execution time of 30 seconds exceeded in /var/home/eltirol.at/www/shop/libraries/joomla/archive/tar.php on line 210

Hallo ! Wer kann mir helfen. Ich kannden Hika Shop nicht mehr updaten. Bekomme immer diese Fehlermeldung.
Fatal error: Maximum execution time of 30 seconds exceeded in /var/home/eltirol.at/www/shop/libraries/joomla/archive/tar.php on line 210

Besten Dank

Hier habe ich folgende stehen:

$contents = substr($data, $position, octdec($info));

Hello,

A solution can be to install it via FTP as it's described on our documentation :
www.hikashop.com/support/documentation/5...-to-install.html#ftp

No sorry doesnt work, i updated now to joomla 3.6.3 but the Hika shop iupdate doesn`t work

Hello,
In that case the solution will be to increase your server max execution time.

And how i can make this ?