BabaJ

"My god! What's wrong with you, man?"

Like I already said...ask SideFX...they can likely clarify what the deal is and why.

But I suggest you change your attitude with them first if you want help.

Did you add 311 yourself at some point to overide the default Python version?

I don't use python much but I do recall in discussions on the forums of people specifying the Python version they want to work with.

What you are showing here is not what's available on the download page.

Maybe someone who works regularly with Python would have noticed the same thing, if true(SideFX removing 311 versions).

Otherwise, if you want to be clear - just go to submit bug/rfe page and ask SideFX why they removed 311 default versions from the production builds.(If they did).

And if they did, again, pretty sure you can just download the .684 version you want but in preferences(or wherever Python alternive versions are specified); Set to your desired Python version.(311, off course with that python version download and placed where it can be accessed).

No need to be 'snappy' - You weren't actually clear from the start of your first post, you only added 311 to the mix in later comments.

You said originally:

"I can't find Houdini 20.5.684 production build ! "

you also said in your last post:

"they removed the latest version, which was 20.5.684, and replaced it with an older version, 20.5.654
How is this possible?"

But you also added 311 to your comments.

It's likely that you thought there was a 311 but never was.

There is only 310 for all versions, not just the two your were asking about, i.e. 20.5.684 vs. 20.5.654