http://www.magentocommerce.com/knowledge-base/entry/how-to-upgrade-magen... -- NOT helpful, old
That's more recent: http://www.magentocommerce.com/wiki/upgrading_magento
Here are the steps for upgrading Magento with a full package or via SVN.
Steps for upgrading with the MagentoConnect Manager are below.
1. Backup your database
2. Backup all the code you modified yourself, and don’t forget to keep the original installation archive
3. Take care of saving the media directory that contains all the uploaded product/category images
4. Create a backup copy of app/etc/local.xml file
5. Download a new installation archive or run SVN update if you checked it out from the Magento repository
6. Extract and upload all the files it contains to your server
7. Delete var/cache and var/session directories
8. Point your browser to any Magento page
9. Database upgrades should happen automatically
10. You are done!
Upgrading Magento using the MagentoConnect Manager
2. Log in using a user who has full permissions
3. Make sure to select “Clear all sessions after successful install or upgrade”
So next time I try that uploader thing.
This time, I got the images again that I had renamed to change my header. I guess I'll have to find out where the code is and change it so that I won't have to find and delete those images every time I upgrade.
And, I tried the WHM backup restore because I started to upload the filed before saving that xml file and it did NOT work.
Just got some error.
That's disturbing, I was relying on having a daily backup.
Time wasted: almost 3 hours and I haven't even fixed the images yet.
-- that was easy because the old renamed images were still there, so I knew what to delete.
-- and always have to remember to upload MY favicon.ico again
Once the site is live, I think I'll wait a few days to upgrade or skip it if it's not an issue that effects me. It sure is a hassle.