Hi. Anyone help me change version of CKEditor from 4 to 5.

I downloaded Package version 5, extract it, but i can't active it on IPS

This is not supported.  This requires a LOT of backend code changes within IPS to support.  The editor is used in virtually EVERY single component of the site.  You can't just rip it out and drop in a new version.  

By the way...  per @Matt:

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We're very much aware of CKEditor 5.

As mentioned above, the migration to v5 isn't a simple case of dropping in the new files. We'd need to re-code all of our custom plugins that handle many things including embedding, drag and drop uploading and much more.

CKEditor 4 is supported until 2023. While CKEditor 5 brings many useful new things, it's not urgent enough for us to "down tools" and focus a 6-12 week block on it.

It's on our roadmap along with other javascript improvements that we want to develop and deploy.

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