Apple · laptop motherboard

Apple 820-2542

BIOS
Board code
820-2542
Revisions
Rev A
Files
2
Updated

Apple 820-2542 is a laptop motherboard.

The catalog has 2 BIOS files for it, posted between 2024 and 2025. 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.

BIOS notes: file names mention 4 MB chip sizes. Read and save the original chip contents before you write anything to it — Keeping the Windows Product Key (MSDM) When Reflashing a BIOS.

Files for Apple 820-2542

BIOS and firmware 2 All bios and firmware →

Notes from the source posts

  • You can give us as a gift.

Frequently asked questions

Which revision of 820-2542 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 820-2542 BIOS?
Read the original chip with a programmer and save two copies before writing anything. File names for this board mention 4 MB images; the dump size must match your chip. 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