Update from 2.3.3

That’s quite an undertaking.

Make sure you have good backups and that the host running that WordPress installation has the minimum PHP and mysql requirements for the current version.

https://www.ads-software.com/about/requirements/

https://codex.www.ads-software.com/WordPress_Backups
https://codex.www.ads-software.com/Backing_Up_Your_Database
https://codex.www.ads-software.com/Restoring_Your_Database_From_Backup

You’ll need to upgrade in stages, switch to the default theme and deactivate all of the plugins.

https://www.ads-software.com/download/release-archive/

2.3.3 -> 2.5.1 -> 2.6.5 -> 2.7.1 -> 2.8 -> 2.8.6 -> 2.9.2 -> 3.0.6 -> 3.1 -> 3.2 -> 3.3.1

You get the idea. I believe you may be able skip one or two of those versions but I’m not 100% sure of that.

Also, as you are probably aware the admin GUI has changed dramatically since 2.3.3 so make sure/prepare whoever is using that blog doesn’t get massive culture shock.

Thanks & Uffff….

So my next will be – how do I install that version’s plugins, let’s say if I want to install a plugin without updating the WordPress version ?

Thanks

Amit

You don’t. You only install plugins compatible with your version of WordPress.