Mazda6 2018 Transmission fluid drain and fill questions

Hello folks,

Mazda 6 2018 transmission fluid drain and fill

Hello folks,

I am planning to perform the transmission fluid drain and fill first time at 81k miles. Is that something specific that dealership has to do that involves software update, specific procedures temp. Adjustments ext, or is something someone can do or DYI if I buy the OEM filter and fluid?
 
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