need advice on 8810 headset/power down problem
 

As a m8 owes me a bit of cash he's offered me his 8810 handset instead but there's a couple of problems with it. I haven't checked it out yet but from what he tells me there is a problem where a headset (handsfree??) alert comes up on screen even when a headset is not in use. I think it also has that problem that often occurs with the 8210 where the battery lifetime is low and it sometimes turns itself off. He says at other times the phone is totally fine.

Does anyone know if a s/w flash will fix this or has any ideas or comments at all?
Would really be appreciated.Cheers.