Apple · laptop motherboard

Apple iMac A1419-EMC 820-6478

BIOS
Board code
820-6478
Revisions
Rev A
Files
1
Updated

Apple iMac A1419-EMC 820-6478 is a laptop motherboard used in the Apple iMac A1419-EMC.

The catalog has one BIOS file for it, posted in 2018. Each download button opens the original Telegram post.

The files are marked Rev A; other revisions of the same board can differ in parts and layout.

Read and save the original chip contents before you write anything to it — Keeping the Windows Product Key (MSDM) When Reflashing a BIOS.

Compatible models

  • Apple iMac A1419-EMC

Files for Apple iMac A1419-EMC 820-6478

BIOS and firmware 1 All bios and firmware →

Frequently asked questions

Which laptops use the 820-6478 motherboard?
File names in the catalog tie 820-6478 to the Apple iMac A1419-EMC. Laptops sold under one model name can use different boards, so confirm by the code printed on the motherboard.
Which revision of 820-6478 do I have?
Files for this board mention Rev A. The revision is printed on the PCB silkscreen, usually next to the board code. Pick files with the same revision when you can; if yours is not listed, the closest revision is usually fine for the schematic but check part positions in the boardview carefully.
What should I check before flashing the 820-6478 BIOS?
Read the original chip with a programmer and save two copies before writing anything. A dump from another board carries that board's serial number and MAC address, so restore yours from the backup.

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Files are hosted on Telegram by third parties; ExcitingSpas.com only links to public posts. Check that a file matches your board before using it. Disclaimer · Report a file