One behind tweeter, one behind door release escutcheon (remove escutcheon), two under armrest (armrest stays on panel), using trim tool start prising outwards along bottom and work your way around bottom and both sides a bit at a time. Don't try to prise each clip out fully in one operation- 5mm at a time will do.
There are also fir tree clips across the middle horizontally. You can't get to them with a tool but will usually release when you pull the outer edges.
One clips have all released, lift vertically to clear sill lock
Unplug speaker wires
Job done