Multicast Upgrade Tool For Huawei LAN Port Routers Latest Version (Free Download)

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Typical firmware upgrade for any entwork applicance is done via web-interface. The obvious catch in that is, that you need to authenticate, move to a suitable page and upload a file to accomplish that. In rare cases, hardware has an "upgrade mode", which allows you to inject a new firmare to the device without any proper authentication. For hacking, this opens a completely new avenue. If one could modify a firmware (and sign it), it would be possible to unlock locked devices, unlock features, or introduce new functionality.

Getting the box to the upgrade mode sounds easy:
turn power off from the device, keep WPS and Wi-Fi buttons pressed, kick on the power and at a suitable time release the Wi-Fi button. Then normal boot process is stopped and the box will wait for a firmware file to be delivered to it. In reality, it's bit tricky. Possible to do, but bit tricky.

Prerequisites

To get the upgrade rolling you'll need following things:

Huawei E5186s-22a router
A computer running Windows 7, 8 or 10
- Administrator permissions for changing TCP/IP settings is required
An ethernet cable to connect the computer to the router's LAN-port
A firmware file to upload, filename will be something like BV7R2C0update_<version number>.gz.bin
Multicast Upgrade Tool
- This is not publicly available file
- Tool's filename is multicast_upgrade_tool.exe, 3354624 bytes
- The one I got was packaged into multicast.rar, 1040927 bytes.
- SHA-256 sum of multicast_upgrade_tool.exe is 6224fe8fb0ec628a29ade1d7d5fb2db5183bfd43486037d0cdf8c363e8ed8eca
WinRar packing utility from http://www.win-rar.com/ installed and working on your Windows