I got a error 500 as well. For everyone who has not yet updated, I'd recommend:
0. backup files & sql (DB) !!!
1. disable all plugins
2. update oxwall
3. enable plugins again
4. update plugins
In case of problems after 4. manually update plugins.
In case of problems after 2., manually update oxwall core. Do not forget to open ow_updates in the browser after manually replacing files!
I'd not recommend you to:
- update plugins before core
Might result in error 500. Solution: Either disable the plugin causing the issue and all other and update then. Or continue updating core manually.
- update core with plugins enabled
Might result in error 500 Solution: Update manually. Don't forget to open ow_updates in browser. If you still have problems, disable plugins as Chris H. describes.
- update any script without a backup
Everybody complaining that he spent lots of time and money into his
community should ask himself why he didn't take the 10 minutes to do a backup. You should know it's venturous, but you still do it. So don't complain.
(It is not enough to only backup/restore the files! The DB is a lot more important to backup as it contains most of your user data!)
By the way. What do you do if the hard-drive of your server crashes? Then you should have a backup as well.