Seller: macbiosunlock ✉️ (177) 100%, Location: California, US, Ships to: US & many other countries, Item: 392320266937 Bios EFI Firmware Chip for iMac 21.5" Late 2013 A1418 i5 EMC 2638, 820-3588 . EFI Firmware Chip for Apple iMac 21.5" Late 2013 i5 A1418 820-3588, EMC 2638. Mac Bios Unlock. Fix Corrupted Firmware caused during updates. Remove and Unlock EFI iCloud Password Lock. (4 pin, 6 pin). Mac Bios Unlock EFI Firmware Chip for Apple iMac 21.5" Late 2013 i5 A1418 820-3588, EMC 2638 DESCRIPTION NEW Pre-Programmed Bios EFI Firmware Chip for iMac 21.5" Late 2013 A1418 i5 EMC 2638, Logic board: 820-3588 Chip is ready to use Fix Corrupted Firmware caused during updates Remove and Unlock EFI iCloud Password Lock. (4 pin, 6 pin) Disabled Mac Remove MDM (Remote Management), DEP Profile Supported Models: Note: Wrong model will not work iMac 21.5-Inch "Core i5" 2.7 (Late 2013) Intro. September 24, 2013 Disc. October 13, 2015 Order ME086LL/A Model A1418 (EMC 2638) Family Late 2013 ID iMac14,1 Please note this chip will not remove the Operating System password or Hard Drive password. It is highly recommended to format and reinstall a clean version of MacOS after installing the new chip. For professionals. You will need to use soldering tools to remove your old chip and solder the new one. Add your serial number at checkout " Note to seller" if you like to keep your original serial number or just message me. Note: Do not use your original S/N if your Mac has MDM or DEP 100% Permanent and working chip with Clean ME Region You can find the EMC number by visiting this website everymac "dot" com / ultimate-mac-lookup Please contact me if you need help or have any questions RETURN POLICY 30 days return or exchange if there is any problem with the chip. Please contact me before opening case. I will be happy to help you. SHIPPING All orders are shipped within 12/ 24 hours via USPS First Class. (Free) Priority Mail: $5 International Global Shipping Program 7 - 21 days FEEDBACK Please take a moment and leave us a positive feedback. If there is a problem with your order please contact me before leaving negative feedback. 😊 Condition: New, Brand: Macronix MXIC (original), Compatible Brand: For Apple, Type: BIOS chip