Hey 1stAngel, I would recommend you to get a good hosting sever such as HostGator which they provide a service in their cPanel which install wordpress to a chosen site very fast. you can use it to auto update from there instead. if your website keep going down…
then they is two possibility.
1. Sever downtime
2. Website overload
hope this help. you might want to back up your site too before changing anything.