Seller: m-tronicz ✉️ (9,551) 99.9%, Location: San Antonio, Texas, US, Ships to: US, CN, Item: 153768420772 EFI BIOS firmware chip for Apple MacBook Pro A1278 Mid 2012 EMC 2554. BIOS for A1278 820-3115 MID 2012 only. Fix corrupted bios. Remove EFI lock. EFI BIOS firmware chip for Apple MacBook Pro A1278 Mid 2012 EMC 2554 Fix corrupted bios. Remove EFI lock Won't remove OS lock BIOS for A1278 820-3115 MID 2012 only. It is highly recommended to format and reinstall the MacOS after installing this chip. Condition: New, Compatible Motherboard Brand: Apple MacBook Pro, Model: Apple MacBook Pro A1278, Type: BIOS Chip, MPN: A1278, Brand: Apple MacBook Pro