Downloads for GPD WIN 4 2025 (8840U / HX 370)
firmware, BIOS, drivers and tools — scanned and versioned Full libraryChangelog
LATEST
v0.14
← current download
- GPD WIN 4 BIOS **(current for AI 9 HX 370)** | v0.14 | 2026-01-27 | AI 9 HX 370 only | Format USB drive to FAT32, place BIOS file on USB drive, power on and press F7 to select USB boot and flash BIOS. Keep device on charge. WinRAR decompression password: `123`
Older versions stay downloadable for rollbacks — every version keeps its own verified file.
Changelog
LATEST
v0.04
← current download
- GPD WIN 4 BIOS **(current for 8840U)** | v0.04 | 2025-09-28 | 8840U only | Format USB drive to FAT32, place BIOS file on USB drive, power on and press F7 to select USB boot and flash BIOS. Keep device on charge.
Older versions stay downloadable for rollbacks — every version keeps its own verified file.
Guides for the GPD WIN 4 2025 (8840U / HX 370)
17 guides, grouped by task
Getting started
1 guide
Getting started with the GPD WIN 4 (2023 & 2024)
Congratulations on purchasing the GPD WIN 4 handheld gaming computer. Whether you have the latest 2024…
Firmware & BIOS
4 guides
How to update the GPD WIN 4 2023 and 2024 BIOS
In this article, we will cover the entire process of preparing and updating your GPD WIN…
How to update the GPD WIN 4 2023 joystick firmware
Yeah, even joysticks have firmware updates for them now. With the updated firmware you get improved…
GPD WIN 4 6800U LCD Firmware Update Stuttering Fix – No more 60Hz Refresh Bug
IMPORTANT NOTE: This fix only applies to the first-generation GPD WIN 4 6800U models. If you…
How to Update the GPD WIN 4 2022 BIOS
Ready to boost your GPD WIN 4? Updating your WIN 4 BIOS can significantly improve its…
Troubleshooting
1 guide
Troubleshooting the GPD WIN 4 (2022)
It's super important to keep your device running smoothly. A large part is ensuring that you've…
eGPU & docks
3 guides
GPD Tool Download, Setup Guide & Troubleshooting for GPD Devices
What is GPD Tool? GPD Tool is a Windows utility for compatible GPD handheld gaming PCs…
GPD BIOS updates and guides
We have dedicated pages for GPD BIOS updates and guides for how to install them. You…
eGPU fix for GPD HX 365 and HX 370 CPU – GPD Win 4 2025, WIN MAX 2 2025, WIN Mini 2025, Pocket 4 & Duo
If you are experiencing issues with your GPD WIN 4 2025, GPD WIN MAX 2 2025,…
Repairs & mods
3 guides
How to replace the GPD WIN 4 triggers and controller boards
This video guide shows how to replace the GPD WIN 4 Left & Right triggers and…
How to replace the GPD WIN 4 SSD
This video will show you step by step on how to change the display on a…
How to replace the GPD WIN 4 display
This video will show you step by step on how to replace the GPD WIN 4…
OS & software
2 guides
How to Calibrate GPD Joysticks
Occasionally the joysticks on devices such as controllers or handheld PCs can lose their calibration resulting…
How to Reinstall Windows on GPD WIN Devices
Reinstalling your Windows operating system can be done for several reasons. Whether something has gone wrong…
More guides
3 guides
GPD Motion Assistant Software
Below you can find the latest version of the GPD Motion Assistant software which is available…
How to change the RAM frequency on GPD devices
This guide will show how to change the RAM frequency on your GPD devices including GPD…
How to Use the GPD WIN 4G LTE Module with Any Device
The GPD 4G LTE module is not just for gaming on the go with a GPD…
Also useful for GPD WIN 4 2025 (8840U / HX 370)
Broad guides are shown here without being assigned to a specific model.
Generic / cross-device guides
View all generic guides
Getting started
Returns – How to package your Item
This article will help you understand how to return a product to us to ensure it remains safe during transit. We will…
Troubleshooting
The Ultimate Guide to Fixing Windows 11 Blue Screen of Death (BSOD) Errors
Introduction The Blue Screen of Death (BSOD), technically known as a "stop error," is a critical safety mechanism within the Windows 11…
Addressing Windows 11 24H2 BSODs on Select WD & SanDisk SSDs
Understanding the Issue Users upgrading to or installing the Windows 11 version 24H2 update have reported encountering significant system instability, specifically experiencing…