I update camera RAW to new version and UI was change can I change it back

I just watched this video which may be of interest to some here. It’s by Blake Rudis, who is quite experienced at ACR processing and color grading, and he does not spend a lot of time in Lightroom. Turns out…he loves this update. He thinks he’s going to get better work done, faster, and more precisely, and he points to a long list of details in the new UI to show what he means. He is much more positive about ACR 12.3 than I ever thought he would be.

My point? Let’s see how these UI changes look if we propose that Lightroom or smartphones did not have anything to do with them. Just on their own. What if Adobe thought through a redesign in order to improve the workflow? That’s what Blake seems to think. If you disagree, when you talk to Adobe about it on the Feedback site, be specific about why it’s holding back your productivity or your quality. And it can’t just be “I hate Lightroom” or “I don’t like change.” Have good counterpoints to the favorable points that Blake Rudis made in that video. If you give good, concrete examples, Adobe might listen: As a Lightroom user, I watched Adobe backtrack and reverse out of a complete redesign of a Lightroom module a few years ago, when users staged a rather major revolt and made their voices known.

I personally hate the UI in Lightroom, but after using the new ACR UI I found going back to old ui difficult. 

It’s totally fair if a Lightroom-based UI is not what you want. I just happen to like how Lightroom Classic has handled my 100,000+ images, so that’s where I come from. The best place to tell Adobe what you think about the Camera Raw changes is at the official Adobe Camera Raw Feedback website, where requests can be upvoted and Adobe staff are much more likely to respond and mark the status of a request. This forum is more of a user-to-user place for questions.

It looks like there is already at least one request there with some votes and a discussion in progress:

Camera Raw 12.3: How to revert UI to older version, one with vertical filmstrip?

This Camera RAW update is absolutely atrocious. I'm a professional photographer, have been using this for the past ten years, and I cannot navigate through the features quickly to edit in a timely manner. This is crucial for editorial photographers like myself to transmit photos immediately. The scrolling to different features vs. clicking to the next window is a time suck. Please change things back to the order they were. This is God awful. I can't system restore and need the old version back. 

No, we'll be forced to learn the new UI, or never have updates. True, they moved averything for no good reason, didn't make use of the vertical space created to increase the size of previews, there's still no Vibrance option on the Adjustments brush, but at least the UI has now been dragged down to the level of all the other versions. Rejoice!

The new UI is crap. This software is difficult enough to use without Adobe completely changing the look, name, and interface. I am all for new features and small tweeks here and there, but to completely rearrange and rename stuff I have been using for years is BS. They could at least give us the option to go back to the old UI.

It would be better for you to learn the new UI, because it isn’t going to be changed back.

If you learn the new UI, you will be able to use the updates that will come later. Also, part of the reason they redesigned the UI is because now it’s more consistent with the raw controls in the desktop and phone/tablet/web versions of Lightroom, so if you ever want to use those tools, knowing the new Camera Raw UI will be an advantage.

If you go back to an earlier version of Camera Raw, you’ll be stuck on that version, and you won’t be able to use it forever. It is likely to become incompatible with a future update to your computer operating system or Photoshop, or if you buy a new camera.

The best long term solution is to learn the new UI. It actually has some new customizations, like where to put the filmstrip and which panels to display, so you might be able to set it up in a way you like better.

Yes, you can download and install a previous version of Camera Raw and that will give you the old interface back. However, that will mean you will not have support for the new cameras that were added in the latest update. The new interface is more Lightroom-like, and personally I prefer it. As far as I know, the only change that can be made is the position of the previews.