You can extract necessary images to flash onto a bricked device using ADB/Fastboot.
Huawei packs its official smartphone and tablet firmware into a single, proprietary file named UPDATE.APP . This file contains the complete Android operating system partition images, including the bootloader, recovery, system, vendor, and boot partitions. Because it is packaged in a closed format, standard zip extractors cannot open it.
If you encounter compatibility issues with newer EMUI or HarmonyOS firmware, consider these modern alternatives:
The legend on XDA said that by extracting the cust.img from an older, more stable firmware and flashing only that partition via a patched fastboot, you could restore battery calibration and even resurrect the original camera tuning — without rolling back the entire OS.
Right-click on the file you want to extract (e.g., boot.img ). Select . Choose a destination folder and click OK. Common Use Cases (2021)
: The tool generally requires .Net Framework 3.5 to run on Windows.
Extract the downloaded ZIP file to a dedicated folder on your PC (e.g., C:\HuaweiExtractor ). No formal installation is required; it runs as a portable executable. Step 2: Obtain and Extract Your Stock Firmware
Once loaded, the tool displays a list of all partitions inside the firmware:
If an over-the-air (OTA) update fails or a system file gets corrupted, your device might get stuck on the boot screen. By extracting the stock BOOT.img , RECOVERY.img , and SYSTEM.img files, you can manually flash them via Fastboot to restore your phone to a working state without losing your personal data. Rooting via Magisk
generally praise its simplicity and effectiveness for the devices it supports. Compatibility Limits
Using the Huawei Update Extractor 2021 is relatively straightforward. Here's a step-by-step guide:
: Right-click on the desired file (e.g., BOOT.img or SYSTEM.img ) and select Extract Selected .
: Supports older hardware profiles (like Nexus 6P) alongside modern Huawei custom profiles.