Xiaomi RedmiBook 4X laptops (RB4X-...) remain popular due to the balance of price and performance, but their owners often face the need to update the system. Updating the BIOS, drivers or operating system can solve performance problems, compatibility of hardware components or eliminate security vulnerabilities.
In this article, we will discuss all the official ways to update RedmiBook 4X, including BIOS, drivers and Windows, and how to avoid common errors. We will pay special attention to the risks when updating the BIOS, the only procedure that can crash a laptop. If you have never updated your firmware at the motherboard level, we recommend that you carefully study the section with warnings.
⚠️ Attention: Update BIOS on the RedmiBook 4X drops all the settings into UEFI, including boot priority and security settings. After the procedure, you may need to reconfigure the boot disk or disable Secure Boot for some operating systems.
1.Preparation of the laptop for the update
Before any manipulation of the system, you need to make sure that the laptop is ready for the procedure, and neglect of preparation is the main cause of failure.
First, check the current versions of the software:
- 🔹 BIOS: press Win + R, enter msinfo32, Find the line Version. BIOS. For RedmiBook. 4X Current versions start with 1.0.5 and higher.
- 🔹 Drivers: Open Device Manager (devmgmt.msc) and check for exclamation marks next to the components.
- 🔹 Windows: in Options → System system → About the program, see the OS version. Windows 10 is recommended for stable operation 22H2 Windows 11 23H2.
Second, back up your data. The BIOS update doesn't affect the files on the disk in theory, but power failures or firmware errors can cause you to lose information. Use an external drive or cloud storage to copy important documents. For reliability, image the system through Control Panel → Backup or Macrium Reflect utility.
Power requirements: connect your laptop to the charger and make sure the battery is at least 50% charged. Updating the BIOS when the battery is discharged or the power is cut is almost guaranteed to cause the motherboard to fail.
Download official files from Xiaomi website|Check the version. BIOS Windows|Create a backup copy of the data|Connect the charger|Close all programs-->
2. BIOS update on RedmiBook 4X
BIOS (or UEFI) is low-level software that manages the hardware components of a laptop before the operating system is booted, and its upgrade can improve compatibility with the new hardware, fix power management errors, or add support for new processors (relevant to 12th-generation Intel models).
The official way to update the BIOS for RedmiBook 4X is:
- Follow the instructions of the installer. The laptop will automatically restart and start the firmware process.
If Xiaomi doesn’t have a new version of the BIOS on its site, but you’re sure it should be (like forum reviews), check the regional version of the site. Sometimes updates first appear on the Chinese portal mi.com/cn.
⚠️ Note: Some users are trying to get a BIOS through DOS-mod or third-party utilities like AFUWIN. For RedmiBook. 4X This is not recommended – Xiaomi is blocking unofficial upgrade methods and the laptop may stop turning on.
What to do if the BIOS is not updated correctly?
3. Alternative ways to update the BIOS
If the standard method doesn’t work (e.g., the BIOS installer is giving an error), you can try updating through the UEFI Windows interface.
Instructions for updating through UEFI:
- Download the BIOS file in.cap format (if available on Xiaomi’s website).
- Copy it on. FAT32-flash drive (not a flash drive) NTFS!) And put it in the laptop.
- Restart the device and log in to the BIOS by pressing F2 or Del when booting.
- Find Advanced → Start Easy Flash (the name may vary).
- Select the file from the flash drive and confirm the update.
Some versions of RedmiBook 4X have an online BIOS update mode right from the UEFI interface, which requires connecting the laptop to the Internet via an Ethernet cable (Wi-Fi in BIOS usually doesn’t work) and selecting the Online Update option.
| Method of updating | Pluses | Cons | Risk of failure |
|---|---|---|---|
| Official EXE-installer | Simplicity, automatic compatibility check | Requires Windows, does not work when OS crashes | Low. |
| UEFI (Easy Flash) interface | Works without OS, more reliable in case of Windows failures | It's more difficult for beginners, you need it. FAT32-flash-drive | Medium. |
| Online Update in BIOS | You don’t need to download files manually. | Requires a wired connection to the Internet | High (depends on network stability) |
Official EXE-file|Through the interface. UEFI|Online update in BIOS|Not updating. BIOS generally-->
4. Driver update for RedmiBook 4X
Drivers ensure that the components of the laptop work correctly: video card, sound system, touchpad, Wi-Fi, etc. Their update can solve problems with connecting devices, improve performance or add new features (for example, Wi-Fi 6 support for Intel AX200 adapters).
Ways to update drivers:
- 🔹 Through Device Manager: Open Device Manager (devmgmt.msc). Find the device with the yellow exclamation mark (or select the component to update). Right-click → Update the driver → Automatic search.
From the official Xiaomi website:
Support → RedmiBook 4X → Drivers
Through third-party utilities:
Driver Booster
Snappy Driver Installer
For RedmiBook 4X, it is critical to update drivers to:
- 🖥️ Video cards (Intel Iris Xe or NVIDIA MX450 — Outdated drivers can cause artifacts or overheating.
- 🔊 Audiochip (Realtek) ALC256). Without updates, the microphone or speakers may not work.
- 📶 Wi-Fi/Bluetooth-module (Intel) AX200 qualcomm QCA61x4). New versions add support for modern communication standards.
Before upgrading to RedmiBook 4X, consider:
- 🔋 Battery charge should be at least 40%, and laptop – connected to the network.
- 💾 Free space on the system disk – at least 20 GB (Windows 11 requires more space for temporary files).
- 🔑 License: If your Windows was preinstalled by Xiaomi, it is tied to the motherboard and will survive the upgrade.