Firmware upgrade for HG659

[jbllora]

Hi.

How can I upgrade my firmware for my HG659?

S/N: J3N8W17614002438

MAC: C486E9A42629

Device ID: 00E0FC-J3N8W17614002438

Software Version: VER.B

Hardware Version: V100R001C216B112

Thanks

Javier