I tried to upgrade a Joomla Webpage from 2.5.xx to 2.5.xx (Unfortuantely I cannot remember the versions)
Before I did that, I made a copy of all FTP Files as well as I exported a SQL File from phpmyadmin. Furthermore I backed it up with Akeeba Backup and have one jpa File from there.
During trying to update, I got an error message:
invalid AJAX data
and the update got stuck at 38.8%. After that when I tried to access the webpage it was a blank page and also login to backend didnt work anymore.
I tried to install a new copy of Joomla in a different folder and restore it via Akeeba Kickstarter, but it didn't work with me. I am also struggeling with reimporting the SQL copy into PHPmyAdmin, when trying to import it, it sais the file could not been read and I also get a notification at the bottom of phpmyadmin that the connection with controluser could not be established.
So basically the task is to restore the website as it was before using the Akeeba Backup or Mysql+Files, so that the webpage is like it was before the update, or ideally in a new Joomla Version (A version with 2.5.xx, not 3.xx)
It would be good if this can be done in an evening.