- No, there is no way to update lens profiles without updating Lightroom.
- But you can create your own lens profile.
- Lightroom reads camera and lens profiles from several locations on your computer depending on the operating system. If you use the Adobe Lens Profile Creator utility to create your own lens and camera profiles, Lightroom installs them here:
Applications/Adobe Photoshop Lightroom X/Right-click Show Package Contents/Resources/Camera Profiles
Applications/Adobe Photoshop Lightroom X/Right-click Show Package Contents/Resources/Lens Profiles
X:\Program Files\Adobe\Adobe Photoshop Lightroom 4.2 RC\Resources\CameraProfiles\
X:\Program Files\Adobe\Adobe Photoshop Lightroom 4.2 RC\Resources\LensProfiles\
For more information about creating your own lens and camera profiles, click here.
Actually, there is.
Download and install the free DNG converter which includes new profiles.
You can now move these profiles to the location where LR has it's profiles stored.
Here is how to find wherehttp://www.lightroomqueen.com/articles-page/lightroom-5-default-locations/
There actually are threads that discussing this solution.
Make sure your lens is listed: https://helpx.adobe.com/x-productkb/multi/lens-profile-support.html
Also note that profiles are separate for jpg and raw.