Hi I am a noobie. my first post. Was there any update on this issue as i am experiancing the same thing.My phone was working fine. dnt know if it was an app or an flash that caused this not to work. I did realize that my phone is stating that the version is 0000. i had to change my HW revision to 2021 or something to flash the last time but now I see that under about phone the N900 and version states (unknown) and there is no bluetooth mac line either only shows the wifi mac.
Dont wanna send my phone to nokia here in SA as the guys' here are not that bright.
that is my rundown of how I got this issue,maybe someone can help.