Reset to factory settings

How do you reset the picobricks to factory settings, ie its state when unboxing.

I keep getting some errors, for instance:

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 File "<stdin>", line 15, in <module>

TypeError: unexpected keyword argument 'pin_num'

When running alarm_clock

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Traceback (most recent call last):

 File "<stdin>", line 25, in <module>

AttributeError: 'WS2812' object has no attribute 'pixels_fill'

when running autonomous_lightnint_01

etc... etc...