EFI and SMC firmware updates for Intel-based Macs - Apple Support
Computer Model identifier EFI Boot ROM version SMC version iMac iMac (21.5-inch, Late 2013) iMac 14,1 IM141.0118.B00 (EFI 2.1) 2.14f19 (1.1) iMac (21.5-inch, Late 2013) iMac 14,3 2.14f19 (1.1) iMac (27-inch, Late 2013) iMac 14,2 IM142.0118.B00 (EFI 2.1) 2...