I was unaware that you couldn"t use the first-gen Zune as an external drive via USB without hacking it and now, apparently, the new firmware has locked down that hack. I wouldn"t know, I hardly used my Zune since I didn"t have enough hard drive space on my MacBook to install Windows, which I"ve done since my upgrade to Leopard and I finally got myself an external.
Oh, XP, how I"ve missed thee. Nevertheless, the crafty folks over at the Zunerama forums have figured it all out and now you may resume using your Zune as a USB drive.
The usual disclaimers apply: backup your registry first; be very careful; and don"t blame us if things go wrong.