When i try and turn on the bluetooth on my n80 i get the error "Unable to perform bluetooth operation".
I have updated my firmware to the latest and reset my phone and it still does not work. How do i fix this?

Try again the Firmware Upgrade process. It must work... or habe a permanent damage.

try to hard format the cell maybe it'd work

I had this problem. i just took it back and got another. i think it was because i foolishly deleted some things off of my phone

I got the exact same error after V4 update...

Quick question; Have you enabled BT? I hadn't....

I get this error when enabling bluetooth in Connect. > Bluetooth.
I have done a hard format also. I will wait for the next firmware release and if it does not work i will have to get warranty on the phone.
How much warranty do these phones come with?