Rats!!! I've been using the Blackvue DR400 HG for a few years now - very happy with it.
Bought through Amazon from a very helpful seller.
Recently went on-line to upgrade the firmware in an attempt to be rid of the Korean voiceover when the camera boots from a clean SD card.
"Press Realese form Pittasoft Co. Ltd Ref to unauthorised sellers - Amazon & Ebay
Regrettably, in our sales policy, we cannot provide any warranty service including F/W changing or upgrading for the products which are purchased through all of the unauthorized global on-line such as markets (
www.amazon.com and
www.ebay.com etc..) and illegal parallel exports. (also If it is with Korean voice guide, it must be a illegally purchased product.)
Best Regards,
Pittasoft Co., Ltd"
So be careful where you buy from