Here's the official list from macOS High Sierra with the latest EFI firmware versions:
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efiver.py v1.0 Copyright (c) 2017 by Pike R. Alpha
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Mac-F2268CC8 | iMac10,1 | IM101.88Z.00CF.B00.1708080133
Mac-F2268DAE | iMac11,1 | IM111.88Z.0037.B00.1708080241
Mac-F2238AC8 | iMac11,2 | IM112.88Z.005B.B00.1708080439
Mac-942B5BF58194151B | iMac12,1 | IM121.88Z.004D.B00.1708080012
Mac-00BE6ED71E35EB86 | iMac13,1 | IM131.88Z.010F.B00.1708080805
Mac-F22C8AC8 | MacBook6,1 | MB61.88Z.00CB.B00.1708080203
Mac-F22C89C8 | MacBook7,1 | MB71.88Z.003D.B00.1708080317
Mac-942452F5819B1C1B | MacBookAir3,1 | MBA31.88Z.0067.B00.1708080355
Mac-C08A6BB70A942AC2 | MacBookAir4,1 | MBA41.88Z.007B.B00.1708072159
Mac-66F35F19FE2A0D05 | MacBookAir5,1 | MBA51.88Z.00F4.B00.1708080803
Mac-C3EC7CD22292981F | MacBookPro10,1 | MBP101.88Z.00F2.B00.1708080809
Mac-AFD8A9D944EA4843 | MacBookPro10,2 | MBP102.88Z.010B.B00.1708080805
Mac-F22589C8 | MacBookPro6,1 | MBP61.88Z.005A.B00.1708072217
Mac-F222BEC8 | MacBookPro7,1 | MBP71.88Z.003D.B00.1708080058
Mac-94245B3640C91C81 | MacBookPro8,1 | MBP81.88Z.004D.B00.1708080655
Mac-4B7AC7E43945597E | MacBookPro9,1 | MBP91.88Z.00D7.B00.1708080744
Mac-F2208EC8 | Macmini4,1 | MM41.88Z.0045.B00.1708072325
Mac-8ED6AF5B48C039E1 | Macmini5,1 | MM51.88Z.007B.B00.1708080744
Mac-031AEE4D24BFF0B1 | Macmini6,1 | MM61.88Z.010B.B00.1708080649
Mac-F60DEB81FF30ACF6 | MacPro6,1 | MP61.88Z.0120.B00.1708080652
Mac-A369DDC4E67F1C45 | iMac16,1 | IM161.88Z.0212.B00.1708080033
Mac-FFE5EF870D7BA81A | iMac16,2 | IM162.88Z.0212.B00.1708080033
Mac-DB15BD556843C820 | iMac17,1 | IM171.88Z.0110.B00.1708080012
Mac-4B682C642B45593E | iMac18,1 | IM181.88Z.0151.B00.1708080034
Mac-BE088AF8C5EB4FA2 | iMac18,3 | IM183.88Z.0151.B00.1708080034
Mac-EE2EBD4B90B839A8 | MacBook10,1 | MB101.88Z.0154.B00.1708080122
Mac-BE0E8AC46FE800CC | MacBook8,1 | MB81.88Z.0168.B00.1708080033
Mac-9AE82516C7C6B903 | MacBook9,1 | MB91.88Z.0159.B00.1708080011
Mac-9F18E312C5C2BF0B | MacBookAir7,1 | MBA71.88Z.0171.B00.1708072210
Mac-06F11FD93F0323C5 | MacBookPro11,4 | MBP114.88Z.0177.B00.1708080033
Mac-E43C1C25D4880AD6 | MacBookPro12,1 | MBP121.88Z.0171.B00.1708080033
Mac-473D31EABEB93F9B | MacBookPro13,1 | MBP131.88Z.0212.B00.1708080127
Mac-66E35819EE2D0D05 | MacBookPro13,2 | MBP132.88Z.0233.B00.1708080034
Mac-A5C67F76ED83108C | MacBookPro13,3 | MBP133.88Z.0233.B00.1708080034
Mac-B4831CEBD52A0C4C | MacBookPro14,1 | MBP141.88Z.0167.B00.1708080034
Mac-CAD6701F7CEA0921 | MacBookPro14,2 | MBP142.88Z.0167.B00.1708080034
Mac-551B86E5744E2388 | MacBookPro14,3 | MBP143.88Z.0167.B00.1708080129
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Anyone who upgrades to High Sierra will automatically receive the latest firmware update!
See also:
https://pikeralpha.wordpress.com/2017/09/27/new-handy-script-called-efiver-py/