How to downgrade spt 3.11.3 to 3.10.5?

No, you can not do that. Modders (or the creators) in general don't support old version of SPT anymore.

So I got as far as finding the older version of SPT 3.10.5.

Then I realized, like the user above me said, that I must also downgrade my live EFT copy...

Good luck finding a patcher for that and please do update this post if you find one, as I had no success.

Quote from rickwilder

So I got as far as finding the older version of SPT 3.10.5.

Then I realized, like the user above me said, that I must also downgrade my live EFT copy...

Good luck finding a patcher for that and please do update this post if you find one, as I had no success.

Technically, you would have to find someone with already patched files. ie. a working 3.10.5 install. Same thing is done when backing up an install and wiping your PC so you can keep your SPT version and playthrough.

Quote from CaptainKrunk

Technically, you would have to find someone with already patched files. ie. a working 3.10.5 install. Same thing is done when backing up an install and wiping your PC so you can keep your SPT version and playthrough.

Aha yeah, I figured that would be the only way.

Thank you for the confirmation and your time.

So I basically have to wait till next wipe to play with good AI again.

I remember having some web page with earlier versions and I downloaded older one then manually did all the needed stuff and I was able to play on older version.
I also wanted to go with 3.10.5 as 3.11.3 have some weird stuttering issues. And on top of that some mods are no longer supported and important ones are not yet updated and it is a mistery if they will be updated so I wanted older version instead with proper mod versions.

My thing is I can't get the patcher to go from the newest version to the version 3.10.5 is on, Which I assume doesn't even exist and probably have to run like 3 different patchers

EDIT: if you know where I can get the stuff to play 3.10.5 again hmu though

Automatic patcher AFAIK is only installing the newest SPT without choice of older versions. As I mentioned some quite long time ago I downloaded manually SPT version that was older than newest one and then manually made all the instalation steps. Sadly I had no memory of what web page it was but practically there was all the earlier versions. I think it was official SPT page/archive.