We are currently running version 188.8.131.52 on WCS and we are looking to upgrade. I've been searching for the proper upgrade path for this. I would like to go to 6.0 code. All the controllers will be upgraded to 5.2.178 once WCS has been upgraded. Please let me know the proper procedure.
You should read the release notes thoroughly when upgrading WCS (or a WLC, for that matter). Here's a link to the relevant section about being able to upgrade directly from 184.108.40.206. To perform the upgrade (once you have a good backup or two), you simply run the installer and follow the prompts.
The Cisco WCS release must be the same or more recent than the controller software release. Upgrade the Cisco WCS first to prevent any unexpected problems. Cisco WCS supports database upgrades only from the following official Cisco WCS releases: