LG has vowed to fix an issue with its recent Dolby Vision update, which is causing elevated black levels from all HDMI sources on its entire range of supported TVs. Dolby has confirmed that the fix will require a software update, which is currently in the works.
Meanwhile, Sony is yet to comment on the issues experienced with its own Dolby Vision update. Select Sony TVs received the long-awaited updated last week, but so far do not seem to be supporting Dolby Vision via any HDMI sources. (Sony Dolby Vision Update Currently Restricted to Streaming Apps)
