[LokiCaprion]

Alright, hopefully someone can help. If you think you can, please make sure you read every different thing I've tried, here... I really have done everything I could see on these forums, and I'm at the end of my rope! I leave for Las Vegas in a week, and if I don't have my Zune for the flight, I may just have to choke somebody.

SYSTEM INFORMATION!
3.0 GHz AMD Athlon 64 x2 Dual Core Processor 6000
4 GB RAM
Windows Vista (32-bit)
300 GB Hard drive (130 GB free)

ZUNE INFORMATION!
30GB Zune (Black)
Firmware 2.2 (see below)
Using official Sync cable, plugged into the back USB port (directly into the motherboard)

THE LEGACY
When I first got my Zune about a month ago, everything worked fine. I installed the software from the CD, and it synced flawlessly. This put several songs on my Zune, but I hadn't organized my MP3s enough to put on a REAL collection. I've been putting it off until last week, when I was starting to get ready for my Vegas trip.

I attempt to connect my Zune on Friday, after sticking my MP3s in there. The software loads all my music, but every time I connect my Zune the software would detect it, then immediately crash. Thinking the problem would be solved by a software update, I attempted this. Gets to 100%... the package 'Zune' could not be installed. DIFXAPP: Rollback failed with error 0x2. Error code: 0x80070643.

A little peeved, I thought maybe a full re-install could solve things. Downloaded the official Zune software. Attempted to install the Zune software. Gets to 100%... the package 'Zune' could not be installed. DIFXAPP: Rollback failed with error 0x2. Error code: 0x80070643.

I run Windows Update. Install all the recommended crap. Try installing the Zune software, again... Gets to 100%... the package 'Zune' could not be installed. DIFXAPP: Rollback failed with error 0x2. Error code: 0x80070643.

I look for help on the Microsoft Update, thanks to the link that the Zune error gives me. It tells me to download the "Zune Package". I do so, and attempt to install the Zune software from THAT. Gets to 100%... the package 'Zune' could not be installed. DIFXAPP: Rollback failed with error 0x2. Error code: 0x80070643.

I look for help from places OTHER than Microsoft and find these forums. It suggests to install from the original CD without an active net connection. I attempt this; "Zune cannot be install on your current operating system." I attempt to install with the CD, but with the internet active. Gets to 100%... the package 'Zune' could not be installed. DIFXAPP: Rollback failed with error 0x2. Error code: 0x80070643.

Looking further through the forums, I find SZIPv2. Not feeling too confident at this point, I download it.... and the software installs! I now have, functioning, the Zune software provided via SZIPv2. Perfect.

I connect my Zune, and I'm prompted to update my firmware to Version 2.2. "This could prevent future problems," I think. I update my firmware. Now my Zune is telling me I have to update my Zune software. I attempt to upgrade the software. Gets to 100%... the package 'Zune' could not be installed. DIFXAPP: Rollback failed with error 0x2. Error code: 0x80070643.

Thinking I would just have to downgrade my Firmware to get it work with whatever software version is in SZIPv2, I attempt to do this. I got the Java, and renamed the cab file, and all the good stuff. A ping to go.microsoft.com returns 127.0.0.1 after I change my DNS settings. I attempt to downgrade my firmware... nothing happens.

So, now I have a Zune with absolutely nothing on it but firmware 2.2 which says my software isn't up to date, and a software that refuses to update.

Please tell me SOMEONE can help!