ProcessMaker Forum | BPM Workflow Simplified

Good morning,
I've an old 2.5.0 installation of processmaker, I'd like to upgrade to latest version.
Can I make a single upgrade using the 3.2 release or should I install all the releases in the middle, including 2.5.1, 2.5.2 and so on?

Thanks in advance

It should be possible to upgrade directly from 2.5.0 to 3.2. Follow these instructions:
http://wiki.processmaker.com/3.0/UpgradingProcessMaker

Link which you post inactive, error 404. Maybe someone know other website with instruction? I need it for my case study writing service.