Hi Ive got a blu-ray player BDP 3100 and it's been playing up a lot recently. I first noticed it when i bought CAPTAIN AMERICA on Blu-ray and the sound keeps jumping etc... I took it back to the shop thinking it was the disc, got an exchnage, same thing... Got another exchange... same thing.. and another... same thing... got a refund... re-bought the disc at another shop... samething ( Since then some discs wont play at all ('unknown disc') and my new GAME OF THRONES.... no chance! Anyway, I looked online and figured I'd need to update my software etc... so downloaded the upgrade to a usb stick and tried to update it but it wouldnt have it and kept saying 'cannot verify software' or something? ( Can anybody help? Thank you )