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also rollers are not round , and vibrate very much, how can we fix this please?
my rollers are the plastic ones but have same problem with this guy in this video https://www.youtube.com/watch?v=MlPLmOKgTlk

Thank you!

Hello , yesterday i purchased Arion Digital Smart B+ with "firmware upgradable" sticker on it.
How i know what firmware its on my rollers, and how i can upgrade the firmware if needed?
Sorry for my english.