For these reasons, the Hg658 V2 is not a standard "power user" router. Many users and experts agree that firmware management is typically handled by the ISP. Any investigation into third-party options like custom "DD-WRT" firmware should be considered highly advanced and at your own risk.
Extract the file first; check your exact router model sticker. Firmware upload failed or got interrupted. Hg658 V2 Home Gateway Firmware Update
