Huawei has tried to lock this down. Modern Balong chips (e.g., in Kirin 990, 9000) have stricter signature checks on download agents. But leaked engineering samples of the downloader — often signed with test keys — still circulate in underground forums.
One of the primary features is the ability to revive "hard-bricked" devices. If a Huawei device cannot boot into the main OS or Recovery Mode but can still be detected by the computer when connected via USB (often showing as Huawei USB COM 1.0 or similar in Device Manager), this tool can flash the firmware to restore it. balong usb downloader
The Balong USB Downloader is a software tool that allows users to connect their Huawei device to a computer and update or flash the firmware. The downloader works by establishing a communication link between the device and the computer, allowing the user to transfer firmware files and update the device's software. Huawei has tried to lock this down