I recently revived a 540040 Tivo using a 300GB drive and an InstantCake CD. After multiple dial-ins via the phone line, the Tivo is still running 7.2.0-oth-01-2-540 software. I picked up a Linksys USB200M from a local retailer in hopes of connecting the Tivo to my network. It appears that the 2.1 version isn't supported in the 7.2.0 software. According to Tivo, it needs to be 7.2.2 or higher. Is there anyway to upgrade the 540040 to 7.2.2+ software or am I forced to return the USB adapter?