Sony · laptop motherboard

Sony Z40HR MBX-250

SchematicBIOS
Board code
MBX-250
Platform
Wistron Z40HR
Made by
Wistron
Files
11
Updated

Sony Z40HR MBX-250 is a laptop motherboard designed by Wistron and used in the Sony Z40HR.

The catalog has 7 schematics and 4 BIOS files for it, posted between 2018 and 2022 across 3 Telegram channels. Each download button opens the original Telegram post.

The schematic files are PDFs; the first pages usually hold the block diagram and the power sequence. New to schematics? Start with How to Use a Schematic and a Boardview Together.

BIOS notes: versions with a cleaned ME region are included. Read and save the original chip contents before you write anything to it — Keeping the Windows Product Key (MSDM) When Reflashing a BIOS.

Also listed under platform Wistron Z40HR.

Compatible models

  • Sony Z40HR

Files for Sony Z40HR MBX-250

Schematics 7 All schematics →

BIOS and firmware 4 All bios and firmware →

Frequently asked questions

Which laptops use the MBX-250 motherboard?
File names in the catalog tie MBX-250 to the Sony Z40HR. 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 MBX-250 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