Help with parameter lock

hi , i bought i A4 last week and i having problem to learn hoot use parameters locks example i load a sound in a track , i start to tweak the sound and then i want to return to original sound fast
any help ??
thnk !!!

You save the kit when the sounds are like you want them. Parameter locks you apply by holding a step on the sequencer while tweaking parameters.

The sound will be different (tweaked) on those steps only; on other steps, or when playing the sound manually, the saved kit sound will be what you hear.

If you tweak parameters without holding a trig, you are changing the base sound. To return to the sound you must reload the sound (or the kit containing the sound).

as well as those points, just hit Reload+Sound (after kit saved), but you were not parameter locking by the sound of things, just tweaking as mentioned, unless you had the realtime record enabled