I did by accident. Is there any way to UNBRICK it without taking it to Nintendo??
if it is a full or banner brick, no. you will need to send it to Nintendo and risk them not repairing it because it was modded.
if you can still get to the Wii Menu, maybe depending on what you did to it.
either way, list what you did to it so I and others can determine if it is a lost cause or if you can fix it.