The is a specialized utility primarily used for force-flashing or "unbricking" network hardware, most notably Huawei LTE routers (like the B315 or B593) and Optical Network Units (ONUs). It operates by multicasting a firmware stream over a LAN connection, allowing a device in a bootloop or recovery state to "catch" and install the new software. Key Features and Use Cases
Beta 2 now includes a lightweight topology mapper. This allows the upgrade tool to identify bottleneck links—such as a single uplink feeding multiple switches—and throttle the multicast stream accordingly to prevent link saturation. multicast upgrade tool beta2
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