MSI

MSI PRO 20EX MS-AAC21

BIOS
Board code
MS-AAC21
Files
1
Updated

This page collects service files for the MSI PRO 20EX MS-AAC21 board, fitted to the MSI PRO 20EX.

The catalog has one BIOS file for it, posted in 2023. Each download button opens the original Telegram post.

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

  • MSI PRO 20EX

Files for MSI PRO 20EX MS-AAC21

BIOS and firmware 1 All bios and firmware →

Frequently asked questions

Which laptops use the MS-AAC21 motherboard?
File names in the catalog tie MS-AAC21 to the MSI PRO 20EX. Laptops sold under one model name can use different boards, so confirm by the code printed on the motherboard.
What should I check before flashing the MS-AAC21 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.

Guides for this board

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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