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Once a modchip is physically installed inside your V2 Switch, the rest of the process transitions into a softmod-like experience managed via your MicroSD card. The industry-standard custom firmware (CFW) for the Nintendo Switch is . Preparing Your MicroSD Card nintendo switch v2 softmod
Unlike softmods, installing a modchip in a V2 console requires advanced micro-soldering skills. The installation involves: Opening the console and removing the heat shield. I can provide resources on finding reliable installation