SB5101 Half-Brick... can u help me?

[franklinzero]

I put the ethernet mac as ff: ff: ff: ff: ff: ff and usb as ff: ff: ff: ff: ff: fe and now I can not access the interface haxor. But modem is operational and online.

Now I have to re install haxor or is there another way?

If re install is the only way... I just need to overwrite with lite file of haxor by jtagutility with serial "gadget" and all gonna be ok?