How to unlock speed limit of Tamobyke V20 3.0 display 

Turn on the display, press the “+” and “-”button at same time into setting mode,
then press the power button change to "03", then enter password of "1111". press“+”button to “1---”。 attention: single press the power button to change to next "1"position.
when all "1111" is finished. then long press power button to return previous page and press the "+"button to "001".
then max speed is unlocked.finally exit setting mode by press the “+” and “-”button at same time again.