Seller: biosdepot ✉️ (32,572) 99.3%, Location: San Jose, California, US, Ships to: WORLDWIDE, Item: 400602453243 BIOS EFI firmware chip: Apple iMac 27" A1312 Logic board: 820-2901-A Mid 2010. BIOS EFI firmware chip: Apple iMac 27"A1312Logic board:820-2901-A. This chip has to be soldered on board. (1) to fix a corrupt (bricked) EFI firmware bios chip. (2) to remove EFI firmware pass-word (i t will NOT remove the OS pass-word). BIOS DEPOT Your reliable BIOS source ! * Brand new pre-programmed chip * 100 % verified programming * Comprehensive technical support * Fast shipping (Chip to be soldered on board) BIOS EFI firmware chip: Apple iMac 27" A1312 Logic board: 820-2901-A This item is a brand new pre-programmed BIOS EFI firmware chip for the Apple model in the title of this auction item. The bios chip will be programmed with a working EFI firmware released from Apple. This chip has to be soldered on board. This item can be used for the following purposes: (1) to fix a corrupt (bricked) EFI firmware bios chip. (2) to remove EFI firmware pass-word (i t will NOT remove the OS pass-word) . **Before purchase, please make sure the specifications of your model match the listing title, including the MacBook model and logic board ** Please feel free to ask questions. Warranty : Guaranteed No DOA(Dead/Defective on Arrival); Guaranteed replacement if defective within 1 year Return policy: If the returned item is used, it is subject to a 10% restocking fee. (No restocking fee will be charged if the returned item is not used). Powered by SixBit's eCommerce Solution Condition: New, Type: BIOS CHIP, Brand: Apple