BD-D500-ZF

[audiobookman]

Hi guys,
complete nOOb here so please be gentle.
Ive been reading the board for the last couple of hours and am more confused then ever..
Ive had this machine for just over a year and its been fine.
Then i connected it to the network as i started to use plex - one of the little people in the house accepted a firmware update at some point.
ANYWAYS, cineva problem has arisen, makes me die as the movie i was actually watching i own the original movie but I like to be able to access them when out an about so load them all onto my nas drive, well done i wont be purchasing any more movies because of this silly addware....
Ive been trying the simple way with the dns trick but always get an unstable connetion - further reading points me to the forums and wiki, now im totally lost.
could someone point me please into the correct direction for the firmware i need to get rid of this pointless spyware.

model code - BD-D5300-ZF
Software Version BSP-D5300ZF-1029.0

many many thanks for your assistance,