What else must I update after changing a Polish board member?

Besides the KRS application, update the tax office on form NIP-8 within 21 days of the KRS entry and the CRBR within 14 working days of the change (AML Act, art. 60). If the KRS is not updated, the company cannot rely on the correct data against third parties acting in good faith.

Corporate changes

Source: Zmiana danych w rejestrze przedsiębiorców KRS, Biznes.gov.pl (Government of Poland)