SamyGO

You have to rename any BD-C5500 firmware file, it has to be above 1027.0(latest firmware at the moment) for example 1027.1. Then open this file by any HEX editor and modify 8th line, there you can see the number of version, it has to be the same as name of file, in my case 10271, save this file and ...

Does somebody try to edit firmware in a HEX editor? I opened firmware 1018 in such editor and changed the date(not sure it's necessary ) and at last column in the 8th line I changed 10180 to 10271(this one digit above last firmware 1027.0. there really bad works fast forward and rewind at MKV files....