I finished an upgrade to a Joomla 1.5.25 website with Lyftenbloggie running to a Joomla 2.5.x running EasyBlog.
First there was upgrading Joomla 1.5.25 to 1.5.26. I used Akeeba and backed up the site. Downloaded that package and used Kickstart to get the site installed locally. The upgrade went fine and I applied that to the live site. The commenting issue with the site didn’t get fixed.
Next i needed to install EasyBlog. I purchased the 79.00 pro version, downloaded the 1.5 and 2.5 versions, and installed the 1.5 first. Then I could migrate from Lyften to Easy. Easy didn’t install from the zip, so I unzipped the files into the tmp folder of the website and used the “install from directory” option and that worked.
From there I did a jUpgrade on my local site. Deleted all the 2.5 database entries for EasyBlog. I needed to export all the 1.5 EasyBlog database tables and import them into the 2.5 database.
I then deleted all the files in the 1.5 tmp directory and unzipped the EasyBlog 2.5 install files and used the same path to install EasyBlog into the Joomla 2.5 site.
The template needed to be rewritten to comply with 2.5 standards and reinstalled.
Finally I installed Akeeba and backed up the 2.5 local site. Used FTP to get the files on the new server. Uploaded and ran Kickstart and in minutes the site was up and running.
I Here is a thread that got me started.
http://stackideas.com/forums/upgrade-to-joomla2-5.html
In case the page gets lost here is the steps.
1. Open up PHPMyAdmin tool that is provided by your hosting provider and open up your current site’s database.
2. Make a sql dump for all the tables that has the prefix of jos_easyblog_*
3. Download the .sql file and save it on your desktop.
4. If your new site’s database prefix also uses jos_ , then you can skip this part. However, if you are using a different database prefix, you’ll need to edit the .sql file that you’ve just downloaded, and do a search and replace of jos_ with your new database prefix.
5. Open your PHPMyAdmin and this time, open up your new site’s database.
6. You should see an import link at the top. Click on that, and click on browse. Select the .sql file and click the run import button.
7. Install the latest EasyBlog on your new site 
8. Enjoy blogging! If you have any problems at this point, drop us an email and we’ll take a look at this.