Seller: advancednetwork ✉️ (1,639) 100%, Location: California, US, Ships to: US & many other countries, Item: 192881168103 Bios EFI Firmware Chip for Apple iMac 21.5" 4K A1418 Late 2015 EMC 2833. NEW Bios EFI Firmware chip for iMac 21.5" A1418 Late 2015EMC 2833. Only for EMC 2833. Unlock EFI Firmware Bios Password Lock. Not sure about EMC number?. everymac "dot" com / ultimate-mac-lookup. Fix Corrupted Firmware Caused During Updates. AdvancedNetwork New EFI Firmware Chip for Apple iMac 21.5 inch 4K A1418 Late 2015 EMC 2833 DESCRIPTION NEW Bios EFI Firmware chip for iMac 21.5" A1418 Late 2015 EMC 2833 Programmed and ready to use. This chip can be used for: Unlock EFI Firmware Bios Password Lock. (Alphanumeric, iCloud, 4 pin, 6 pin lock) Fix Corrupted Firmware Caused During Updates Disabled Mac Remove MDM (Remote Management), DEP Profile (It will NOT remove the operating system password or Hard Drive password) The chip needs to be soldered on the motherboard. You need to have soldering skills to replace the chip The chip will come with a serial number or we can program your original S/N into the chip. Note: Do not use your original S/N if your Mac has MDM or DEP profile. 100% Permanent fix. Only for EMC 2833 Not sure about EMC number? You can find the EMC number by visiting this website. everymac "dot" com / ultimate-mac-lookup I can help you find the correct chip for your motherboard if you need help. Please contact me if you have any questions RETURN POLICY We offer 30 days returns if there is any problem with the chip. Please contact us before opening case and we will help you to solve the problem. SHIPPING All orders are shipped within 24/ 48 hours via USPS First Class. (Free) Priority service: $4.99 FEEDBACK Feedback is very important to us. We will leave you 5 star positive feedback. I will appreciate it if you can do the same 😊 Check out my other items! Condition: New, Brand: Macronix MXIC (original), Compatible Brand: A1418 Late 2015 EMC 2833, Type: EFI BIOS Chip, EMC: 2833