How to repair nokia N86 FM Transmitter problem

When you actived your nokia n86 FM transmitter, message will displayed "Feature is not support".
Eventhougt FM Transmitter allowance in your country and it is allowed ( see on ).

How to repair nokia n86 fm problem ?
For this problem :
1. Set your standby themes to horizontal icon bar again and put power off (set off the phone)
2. Put power on (set on the phone)
3. everything will be ok and the fm can be use again.

Some call this firmware bug (ver 10). Other ways you need to upgrade your phone software. (firmware update fix problem).