Please follow the guidance below to install or replace with a new earpad:
To uninstall the earpad, you can directly pull the earpads out from the surrounding plastic housing.
There are a few plastic clips on the inside perimeter which hold the earpads in place.
Just start pulling the earpad from the clips and work your way all around the edge until the whole earpad can be removed.
When install it, you need to re-insert it under the plastic clips in the housing,
position the orientation of the earpad, so it matches the shape of the housing.
Press the earpad edge firmly working your way around the perimeter until the earpad is firmly in place, then you will finish the installing easily as showing in the following photos.
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