HOW TO Reset service light on corsa 07 plate?

To reset Corsa D 57 plate do the following,

put your foot on the brake pedal then press and hold the odometer button in.

Wait until Insp 0 comes on the display, then switch on the ignition wait a few seconds.

Now it should display Insp 19000 (depending on service interval). Release button and brake pedal, now switch off ignition. Next time you turn on ignition the Insp 0 should no longer show on the display. This did work for me.