So I did a fresh install with xenial and dist-upgrade.
so now by using bluetoothctl it does able to pair correctly.
Still not able to pair correctly with bluetooth-wizard,
after GUI says paired, the keyboard still blinking in pairing mode,
but this time I figured if I turn off then on the keyboard, it will connected and works,
however it will drop the connection somethings and need to pair again.
Hi Konrad,
the bluetooth chip came with the system.
So I did a fresh install with xenial and dist-upgrade.
so now by using bluetoothctl it does able to pair correctly.
Still not able to pair correctly with bluetooth-wizard,
after GUI says paired, the keyboard still blinking in pairing mode,
but this time I figured if I turn off then on the keyboard, it will connected and works,
however it will drop the connection somethings and need to pair again.