{"product_id":"imac-a1418-mid-2014-board-820-4668-a-efi-password-removal-chip","title":"Pre-Programmed EFI BIOS Firmware Chip for iMac A1418, board : 820-4668-A, unlock EFI firmware password","description":"\u003ch2\u003e🔹 Product Description\u003c\/h2\u003e\n\u003c!-- US Customer Trust Badge --\u003e\n\u003cdiv style=\"background-color: #fff9f9; border-left: 5px solid #ff2a00; padding: 15px; margin-bottom: 20px; border-radius: 4px;\"\u003e\n\u003cp style=\"margin: 0; color: #ff2a00; font-weight: bold; font-size: 1.05em;\"\u003e💡 Notice for U.S. Customers:\u003c\/p\u003e\n\u003cp style=\"margin: 5px 0 0 0; color: #333; font-size: 0.95em;\"\u003eAll U.S. import tariffs\/duty will be prepaid and fully covered by \u003ca style=\"color: #ff2a00; text-decoration: underline; font-weight: bold;\" href=\"https:\/\/bioschipstore.com\/\" target=\"_blank\"\u003eBIOS CHIP STORE\u003c\/a\u003e. No additional fees or hidden charges upon delivery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003e🔹 Quick Summary\u003c\/h3\u003e\n\u003cp\u003eLooking for a premium, pre-programmed replacement EFI chip for your \u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003eiMac A1418 Mid-2014, board number : 820-4668-A ?\u003c\/strong\u003e\u003c\/span\u003e Our ready-to-install SPI Flash EFI BIOS chip is the ultimate hardware-level fix for motherboard repair, firmware recovery, and permanent password removal.\u003c\/p\u003e\n\u003cp\u003eRestore your iMac back to full working condition—even in critical cases of system lockouts, corrupted firmware, or \"black screen of death\" issues caused by failed OS updates.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReady-to-Use:\u003c\/strong\u003e Pre-programmed with verified clean-ME firmware (no external EEPROM programmer required).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional Grade:\u003c\/strong\u003e Specifically compiled for professional Apple technicians and board-level repair shops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePermanent Fix:\u003c\/strong\u003e A hardware-level replacement that permanently bypasses the lock, unlike temporary software workarounds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e💡 EFI Password Reset:\u003c\/strong\u003e By replacing the physical EFI chip with our pre-programmed clean firmware, you can successfully remove, reset, or bypass forgotten Apple EFI supervisor passwords permanently.\u003c\/p\u003e\n\u003cp style=\"color: #666; font-style: italic;\"\u003e⚠️ Note: This is a brand-new physical hardware chip (SOIC8 \/ WSON8 package). This is NOT a software bypass or digital download code.\u003c\/p\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #eee; margin: 20px 0;\"\u003e\n\u003ch3\u003e🔹 Compatibility Notice\u003c\/h3\u003e\n\u003cp\u003eCompatible Model: \u003cspan style=\"color: #ff2a00; font-weight: bold;\"\u003eApple iMac A1418, Mid-2014, board number : 820-4668-A\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"background-color: #fffaf0; border-left: 5px solid #ffaa00; padding: 12px; margin: 15px 0; border-radius: 4px;\"\u003e\n\u003cp style=\"margin: 0; color: #cc7a00; font-weight: bold;\"\u003e⚠️ Motherboard Revision Check Required\u003c\/p\u003e\n\u003cp style=\"margin: 5px 0 0 0; font-size: 0.95em;\"\u003eDepending on the specific logic board revision (commonly\u003cstrong\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e 820-4668-A\u003c\/span\u003e \u003c\/strong\u003e), your device may use either a \u003cstrong\u003eSOIC8 (SOP8) 8-pin\u003c\/strong\u003e or a \u003cstrong\u003eWSON8 8-pin flat\u003c\/strong\u003e package. Please confirm your exact logic board number and original chip marking before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003eDue to the highly technical nature of Apple board-level repairs, compatibility must be confirmed prior to purchase. If you are unsure, please contact \u003ca href=\"https:\/\/bioschipstore.com\/\" target=\"_blank\"\u003eBIOS CHIP STORE\u003c\/a\u003e with clear photos of your motherboard or your Mac's Serial Number.\u003c\/p\u003e\n\u003cp style=\"color: #888; font-size: 0.9em;\"\u003e*Refunds or returns are not accepted for incorrect diagnosis, logic board mismatches, or improper soldering installation.\u003c\/p\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #eee; margin: 20px 0;\"\u003e\n\u003ch3\u003e🔹 Core Features \u0026amp; SEO Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand-New SPI Flash ROM:\u003c\/strong\u003e Industrial-grade, high-reliability chip for stable long-term macOS performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-Programmed Clean-ME:\u003c\/strong\u003e Flashed with clean ME region firmware and 100% verified before shipping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixes Firmware Corruption:\u003c\/strong\u003e Solves power-on but no display, loop booting, and bricked EFI states.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEFI Password Bypass:\u003c\/strong\u003e Factory-clean firmware structure permanently removes administrative firmware locks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug \u0026amp; Solder:\u003c\/strong\u003e No EEPROM programmers or test clips needed. Just solder the chip and boot up your iMac.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #eee; margin: 20px 0;\"\u003e\n\u003ch3\u003e🔹 Apple EFI Password Unlock Support\u003c\/h3\u003e\n\u003cp\u003eLocked out of your iMac due to a forgotten EFI PIN or supervisor password?\u003c\/p\u003e\n\u003cp\u003eOn Intel-based Macs, security locks are stored directly within the physical SPI flash EFI firmware chip. Replacing the original locked chip with our pre-programmed clean EFI chip permanently removes the firmware-level lock. This allows you to reinstall macOS and access the boot menu freely.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eForgotten EFI administrative\/supervisor passwords.\u003c\/li\u003e\n\u003cli\u003eUnlocking second-hand, off-lease, or recycled corporate iMacs.\u003c\/li\u003e\n\u003cli\u003eIT asset refurbishment, computer recycling, and board-level repair shops.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003e⚠️ Note: This hardware modification permanently bypasses the BIOS\/EFI lock screen. It does not unlock iCloud (Activation Lock) or FileVault OS-level software encryption.\u003c\/em\u003e\u003c\/p\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #eee; margin: 20px 0;\"\u003e\n\u003ch3\u003e🔹 Common Repair Scenarios\u003c\/h3\u003e\n\u003cp\u003eThis replacement EFI chip is highly effective in resolving:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eiMac powers on (fans spin, chime may or may not play) but screen remains completely black.\u003c\/li\u003e\n\u003cli\u003eSystem stuck in a continuous boot-loop.\u003c\/li\u003e\n\u003cli\u003eiMac bricked after a failed macOS or security update.\u003c\/li\u003e\n\u003cli\u003ePadlock screen appears at boot, preventing access to the Startup Manager (Boot menu).\u003c\/li\u003e\n\u003cli\u003eForgotten EFI password preventing OS reinstallation or changing the boot drive.\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003e⚠️ Note: This chip will NOT repair physical hardware failures such as bad LED backlights, shorted capacitors, faulty power supply boards, or GPU\/CPU issues.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #eee; margin: 20px 0;\"\u003e\n\u003ch3\u003e🔹 Technical Specifications\u003c\/h3\u003e\n\u003ctable cellpadding=\"10\" border=\"1\" style=\"width: 100%; border-collapse: collapse; margin: 15px 0; border: 1px solid #ddd;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30%; background-color: #f9f9f9; font-weight: bold;\"\u003eChip Package Type\u003c\/td\u003e\n\u003ctd style=\"width: 70%;\"\u003e8-pin SPI Flash (SOIC8 \/ SOP8 or WSON8 depending on logic board version)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #f9f9f9; font-weight: bold;\"\u003eCapacity\u003c\/td\u003e\n\u003ctd style=\"color: #ff2a00; font-weight: bold;\"\u003e8MB \/ 16MB \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #f9f9f9; font-weight: bold;\"\u003eCondition\u003c\/td\u003e\n\u003ctd\u003e100% Brand-New, Grade-A chip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #f9f9f9; font-weight: bold;\"\u003eFirmware Version\u003c\/td\u003e\n\u003ctd\u003ePre-installed \u0026amp; verified clean-ME firmware\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #eee; margin: 20px 0;\"\u003e\n\u003ch3\u003e🔹 Installation Requirements\u003c\/h3\u003e\n\u003cp\u003eThis product is strictly intended for \u003cstrong\u003eprofessional repair technicians\u003c\/strong\u003e. Replacing SMD (Surface-Mount Device) chips on Apple logic boards requires specialized micro-soldering experience.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLogic board removal and ESD-safe handling.\u003c\/li\u003e\n\u003cli\u003eAccurate chip identification and pin-1 orientation mapping.\u003c\/li\u003e\n\u003cli\u003eMicro-soldering experience using hot air rework stations or fine-tip soldering irons.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"color: #ff2a00; font-weight: bold;\"\u003e⚠️ WARNING: Improper soldering temperature or incorrect alignment can permanently damage the motherboard trace pads or nearby components.\u003c\/p\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #eee; margin: 20px 0;\"\u003e\n\u003ch3\u003e🔹 System Information Notice (DMI \u0026amp; Serial Number)\u003c\/h3\u003e\n\u003cp\u003eBecause this chip is flashed with factory-clean, non-personalized firmware with a Clean ME region, system-specific information such as your logic board's \u003cstrong\u003eSerial Number (S\/N)\u003c\/strong\u003e may be blank or generic after installation. If necessary, these details can be manually reprogrammed using official Apple service utility tools. \u003cem\u003eNote: This does not affect normal boot capability, macOS updates, or hardware functionality.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cem\u003ePlease tell us your serial number in advance. We can help you program the EFI CHIP with your serial number in advance.\u003c\/em\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cem\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #eee; margin: 20px 0;\"\u003e\n\u003ch3\u003e🔹 Before Purchase Checklist\u003c\/h3\u003e\n\u003cp\u003eTo ensure a 100% successful repair, please verify the following:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eConfirm your iMac is indeed the correct model.\u003c\/li\u003e\n\u003cli\u003eVerify the logic board model number ( printed on the PCB, like \u003cstrong\u003e820-XXXXX-X )\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTake note of the original chip package (SOIC8 8-pin or WSON8 flat-pad).\u003c\/li\u003e\n\u003cli\u003eConfirm that the motherboard's issue is indeed firmware-related and not a hardware fault.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e📧 Need verification? Send us a clear, high-resolution photo of your logic board's EFI chip area, and our tech support team will confirm the perfect fit.\u003c\/p\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #eee; margin: 20px 0;\"\u003e\n\u003ch3\u003e🔹 FAQ (Frequently Asked Questions)\u003c\/h3\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp style=\"font-weight: bold; margin-bottom: 5px;\"\u003eQ1: Is this EFI chip pre-programmed and ready to install?\u003c\/p\u003e\n\u003cp style=\"margin-top: 0; padding-left: 15px; border-left: 3px solid #ccc;\"\u003eYes. The chip comes fully pre-programmed and tested. Once soldered correctly, your iMac is ready to boot immediately without any additional flashing or programming required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp style=\"font-weight: bold; margin-bottom: 5px;\"\u003eQ2: Can this EFI chip unlock or remove my iMac's EFI password?\u003c\/p\u003e\n\u003cp style=\"margin-top: 0; padding-left: 15px; border-left: 3px solid #ccc;\"\u003eYes, 100%. Replacing the chip with our pre-programmed firmware permanently removes the EFI password lock. You will gain full access to the Boot Manager and target disk modes. It will not lock up again after future macOS updates.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp style=\"font-weight: bold; margin-bottom: 5px;\"\u003eQ3: Will this resolve my iMac's black screen \/ no boot issue?\u003c\/p\u003e\n\u003cp style=\"margin-top: 0; padding-left: 15px; border-left: 3px solid #ccc;\"\u003eYes, if the issue is rooted in corrupted EFI firmware or a failed system update. It will not fix power issues caused by hardware faults like a dead power supply, bad LCD backlights, or logic board short circuits.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 15px;\"\u003e\n\u003cp style=\"font-weight: bold; margin-bottom: 5px;\"\u003eQ4: Do I need soldering tools to replace the chip?\u003c\/p\u003e\n\u003cp style=\"margin-top: 0; padding-left: 15px; border-left: 3px solid #ccc;\"\u003eYes. Professional desoldering and soldering equipment (hot air rework station, flux, solder wick, and fine solder wire) are mandatory for this chip replacement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #eee; margin: 20px 0;\"\u003e\n\u003ch3\u003e🔹 Legal Notice\u003c\/h3\u003e\n\u003cp\u003eThis product is sold and intended strictly for legitimate hardware repairs, maintenance, and IT refurbishment. EFI password removal and bypass functions must only be performed on authorized devices legally owned by the buyer or client. We do not support or facilitate unauthorized access to stolen or protected hardware assets.\u003c\/p\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #eee; margin: 20px 0;\"\u003e\n\u003ch3\u003e🔹 Shipping \u0026amp; Support\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e🚀 \u003cstrong\u003eFast Worldwide Shipping:\u003c\/strong\u003e Fully tracked registered airmail delivery.\u003c\/li\u003e\n\u003cli\u003e📦 \u003cstrong\u003eESD-Safe Protection:\u003c\/strong\u003e Shipped in anti-static protective packaging to ensure zero electrical damage.\u003c\/li\u003e\n\u003cli\u003e🔍 \u003cstrong\u003eQuality Controlled:\u003c\/strong\u003e Every individual chip is verified and post-programming tested.\u003c\/li\u003e\n\u003cli\u003e💼 \u003cstrong\u003eBulk Orders:\u003c\/strong\u003e Wholesale options and bulk discounts are available for repair shops. Contact us directly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #eee; margin: 20px 0;\"\u003e\n\u003cp\u003e\u003ca style=\"font-weight: bold; text-decoration: underline;\" href=\"\/collections\/all\"\u003eBrowse all replacement BIOS chips at BIOS CHIP STORE\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e🔹 Learn More About BIOS Repair \u0026amp; Chip Diagnostics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca style=\"text-decoration: underline;\" href=\"\/blogs\/news\/what-is-a-bios-chip\"\u003eWhat Is a BIOS Chip and What Does It Do?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca style=\"text-decoration: underline;\" href=\"\/blogs\/news\/how-spi-flash-works\"\u003eUnderstanding How SPI Flash ROM Works\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca style=\"text-decoration: underline;\" href=\"\/blogs\/news\/bios-firmware-architecture\"\u003eIntroduction to Modern BIOS Firmware Architecture\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBack to the \u003ca style=\"font-weight: bold; text-decoration: underline;\" href=\"\/pages\/bios-chip\"\u003eBIOS Knowledge Hub\u003c\/a\u003e\u003c\/p\u003e","brand":"BIOS CHIP STORE","offers":[{"title":"Default Title","offer_id":49712400204026,"sku":null,"price":13.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0814\/4676\/4794\/files\/imac-a1418-mid-2014-board-820-4668-a-efi-bios-password-removal-chip-esd-safe-packaging.webp?v=1784271019","url":"https:\/\/bioschipstore.com\/products\/imac-a1418-mid-2014-board-820-4668-a-efi-password-removal-chip","provider":"BIOS CHIP STORE   ( Free Customs Clearance for US Orders )","version":"1.0","type":"link"}