I've tried this, I go through the installer process but it doesn't update.
Without knowing which version of Photoshop you are using or the specific camera model you have, please review the following suggestions.
Note that the installers on the page suggested previously are for Photoshop CS6 (ACR 9.1.1) and Photoshop CC and later (ACR 9.9).
First confirm which version of the Camera Raw plugin is the minimum required for your camera by referencing the following page.
If the required version of the plugin is older or equal to ACR 9.1.1 and you are using Photoshop CS6, install ACR 9.1.1.
If you are using a "CC" version of Photoshop, install the ACR 9.9 plugin.
If you are using a version of Photoshop older than CS6, you can either upgrade to the latest Photoshop CC 2017 or download and install the free Adobe DNG Converter from the page below. Converting to DNG will allow you to open the raw files in versions older than ACR 9.1.1 while preserving all the raw image data.
Hope this helps.
I have a canon 5D mkiii. Previously I had the mkii and it worked fine, so my current software needs upgraded to support the mkiii but it won't install. I have CS5.5 PS. Now I'm having issues with LR, as it won't allow me to move files from LR to PS and that's how I was working previously when the update didn't take.
The Canon 5D Mark III requires at least ACR 7.1, which requires at least Photoshop CS6 which is no longer available for purchase. To use ACR and Photoshop with your Canon 5D Mark III you will need to do one of the following as previously suggested.
1. Upgrade to Photoshop CC 2017 (Requires a Creative Cloud subscription).
2. Download and install the free Adobe DNG Converter (see my previous message) to convert your images to DNG before opening in Photoshop CS 5.5.
The version of Lightroom you have may be using a more current version of ACR internally which is incompatible with the version of ACR in Photoshop CS 5.5.