What operating system and version of photoshop are you using?
There already is an update, camera raw 8.5, provided you have photoshop cs6, cc, cc 2014 or photoshop elements 12.
For the above versions of photoshop Help>Updates from within photoshop should work.
Otherwise you can use the 8.5 dng converter to convert those files to dng copies which should open in older versions of camera raw.
DNG Converter 8.5
(not for windows xp ,vista or mac os x 10.6.8)
thank's for your response. I've Lightroom 5.5 and Windows 7. Possible ?