After installing the 1.52 firmware version on the blu-ray BDP5200, BDP5200 no longer recognizes the USB keyboard. I run several tests with the K230 Logitech keyboard and KU-0316 HP keyboard, but I can not write anything for example in NetTV (YouTube, Internet browser, ...). The keyboards work well in 1.31 firmware version. Please, how to solve the problem? or how to get the previous firmware version?