PUB HL10-20 Models affected: Serial numbers: MM, RM, SM, TM, VM, ZM, AR, DR, FR, GR, HR, LR, MR, RR (July 2019 - August 2020) GTW720BPN0DG GTW720BSN0WS GTW725BPN0DG GTW725BSN0WS GTW840CSN0WS GTW840CPN0DG GTW845CSN0WS GTW845CPN0DG