https://www.reuters.com/article/us-ethiopia-airplane-boeing/boeing-rolls-out-software-fix-to-defend-737-max-franchise-awaits-u-s-regulators-approval-idUSKCN1R81X1

Boeing Co on Wednesday took its most aggressive moves yet to defend its core 737 airliner franchise, saying it had developed software fixes to prevent failures of an automated flight control system that is being scrutinized after two deadly crashes in the past five months.