…Membership Required You must be a member to access this content.View Membership LevelsAlready a member? Log in here Post navigationACER V5-531-4439 PETRA UMA MB 11324-1 48.4VM02.011 WORKING BIOS ACER V5-531-4439 PETRA UMA MB 11324-1 48.4VM02.011 WORKING BIOS