Help require Firmware for Sharp BD-HP20H

[cliveclock]

Help require Firmware for Sharp BD-HP20H.
I upgraded the firmware in my player because I could not play back blu-ray home movie video disks burnt on my computer unless I burnt them in DVD quality. The player is made for the UK. I first put on HU 7122700 which at first did not seem to make any difference, until I tried to play a region B disc and it would not play that region!! The firmware has changed the player to region A USA. Then tried HU8022000 which made no difference. I then downloaded aan iso file hp20e and burnt that to a disc . That starts to upgrade but ends with version error, not changing the version. Can someone supply a link where I can get some firmware to get it back to playing Region B (2).

Hope someone out there can help or it goes in the bin!

Thanks in advance Clive