I'm sorry to hear that you're having this issue.
Unfortunately, the dongle itself wouldn't be updated. However, if it's not working with either device, it may indicate that either the dongle is broken, or there is an issue with the Blu-Ray player.
Does the dongle work when connected to the TV?
My Samsung wifi dongle (type WIS09ABGN) can't be configured to work with the Blue-ray disc home theatre system. Inserting the wifi dongle in the USB port correctly causes the prompt "do you wnt to configure the network?", with two options YES or NO. However, trying to answer this prompt is impossible....pressing the Enter key (or indeed any other key on the remote control or the HT-BD7200, I have tried them all) is simply ignored. I have updated the firmware on the HT-BD7200 and the UE40B6000 LED TV to the latest versions...what to do now?
Perhaps I need to also update the wifi dongle firmware? If so, how?