Practical Guide to migrate from J1.0.xx to J3.x
Step I: Upgrade your Joomla 1.0.xx site to Joomlla 1.0.15
(J 1.0.15 is latest version in Joomla 1.0-branch) You can download that from Joomlacode after login in Joomlacode.org from the release section. Use this package --> Extract locally and upload and overwrite (in binary mode) all files and folders of the package
You need to download the] Joomla 1.x to Joomla 1.5 migrator script from our site (for free of course)
You install the zip as component in Joomla 1.0.15-> after install go to the migrator component --> check all boxes (keep it simple!) --> Run.--> The result will be an sql-file --> Export the sql file to your computer.
Step II: Extract and install a fresh Joomla 1.5.26
Download and upload this package from Joomlacode (you need to login to get it) to your domain and run the Joomla installer. Instead of "install example data" --> use "migrator script" and upload the script you got from your Joomla 1.0.xx site --> give the correct prefix as in your sql (probably 'jos_') , tick the "This script is a Joomla! 1.0 migration script" box and hit install
Next screen will show that (if all goes well) that the installation is successful. Follow the next steps and you are on Joomla 1.5! Make immediately a backup! Use the free Akeebabackup
---> Review the documentation on the Joomla Migration Portal for detailed information but practically it works like:
STEP III: Install Joomla 3.3.6 in a subdirectory of your Joomla 1.5 installation
do not install sample data!!!
STEP IV: Get and Install SP Upgrade
(all the others are inferior imho) and update the settings in the Options/settings tab of the component. Component is well documented . If all is set properly you can select all and hit upgrade --> few minutes later your site is on J3.3.6 --> Backup your site!(Akeebabackup)
Remove the Joomla 1.5 from root and delete the database in use by J15. Move the Akeebabackup to "root" and upload Akeeba's single file 'kickstart.php" (get it here) to root and run in your browser yoursite.com/kickstart.php and extract the .jpa file.
Create in your CTRL panel a new DB user and DB and assign user to have all functions for that database. After that.....
Run Akeebabinstaller (shows up after extraction of .JPA file). Remove after finish all Kickstart files.
Now your data is on Joomla 3.3.6 and you can add your new template, your extensions etc etc. It is as simple as described