How to unlock DYU C2 full speed mode 25km/h

[@jrufus11]

Does this method work for the T1 as well ?

[@MartinOwen-on3io]

Hi will that work OK the UK version

[@niconerd]

Hi, is this change permanent or can i set it back with the same button combination? Also ours goes around 21 km/h max does this option change that?