Just one day after issuing an SMC firmware update for mid-2013 model MacBook Air units, Apple on Tuesday added an EFI firmware update package for both the mid-2013 and early-2014 models. “This update improves reliability when waking from sleep and when booting while certain USB and Thunderbolt devices are connected,” the company says. It also addresses a rare memory issue, and sleep issues seen while running Windows under Boot Camp….