1. If Fastboot firmware. The ext. must be tgz. If not. Rename it from .gz to .tgz. Extract it by WinRAR

2. For Fastboot firmware. Download XiaomiFlash lastest. Extract tool after downloaded

3. Open XiaoMiFlash.exe. Install driver if tool required. Press select and select to firmware/ROM folder what includes flash_all.bat

4. Make sure your phone are unlocked bootloader. Or you must bring your phone to EDL mode (9008) to flash

5. Bring phone to Fastboot mode by hold Power and Volume down for 5-10s. Release button when It show Fastboot

6. Connect Phone to Computer. Press Refresh to scan device. If a device showed is Ok

7. Tick clean all (very important). If not, your phone will LOCKED BOOTLOADER after flash done

8. Press Flash and wait util it show success or any error

ZIP. ZIP ROM using Update function in System or TWRP

EU. EU ROM flash using TWRP

 How to flash Xiaomi POCO X8s Firmware ROM

Flashing the firmware ROM on your Xiaomi POCO X8s depends on whether you are using a Recovery ROM (keeps your data) or a Fastboot ROM (clean install, requires an unlocked bootloader).

Method 1: Recovery ROM (No Data Loss, Locked Bootloader Supported)

1. Download the ROM: Get the official Recovery ROM package for the POCO X8s (codenamed darwin_global, e.g., HyperOS build OS3.0.305.0.WETMIXM) from a source like HyperOS Update.
2. Transfer to Phone: Move the downloaded .zip file into the internal storage of your POCO X8s.
3. Open Updater: Go to Settings → About phone → HyperOS version.
4. Select Package: Tap the three dots (⋮) in the top right corner and choose Choose update package. (If the option is missing, tap the HyperOS logo 7–10 times rapidly to unlock the local update feature).
5. Flash: Pick the ROM file you transferred, let the system verify it, and tap Reboot and update.

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Method 2: Fastboot ROM (Clean Install, Unlocked Bootloader Required)

1. Unlock Bootloader: Ensure your bootloader is unlocked using the official Mi Unlock tool, and enable USB debugging and OEM unlocking under Developer Options.
2. Install Tools: Download and install the official Xiaomi Mi Flash Tool and Xiaomi USB drivers on a Windows PC.
3. Extract ROM: Download the Fastboot ROM (.tgz format) for the POCO X8s (darwin_global) and extract it to a short directory path on your computer (e.g., C:\rom).
4. Enter Fastboot Mode: Power off your POCO X8s, then hold Volume Down + Power simultaneously until the Fastboot logo appears on the screen. Connect the phone to your PC via a USB cable.
5. Flash via Mi Flash Tool:
   • Open Mi Flash Tool and click Refresh to detect your device.
   • Click Select and browse to the extracted ROM folder (C:\rom).
   • At the bottom right, select Clean all (this will wipe your user data). Avoid selecting « clean all and lock » unless you want to relock your bootloader.
   • Click Flash and wait for the process to finish. Your phone will automatically reboot.