Upgrading from old chained uboot on dockstar (4 replies)

So, I've got a dockstar that I installed Debian Lenny on quite a while ago. I used the old instructions back when they were the recommended method to install. I used a little USB HDD to run Debian and at some point it died. After I confirmed that it was dead, I tried to boot into regular Seagate dockstar system on flash and discovered that it also wasn't booting. I set it aside for a while, but recently managed to get an old Lenny install going again by manually unpacking it to a USB stick and booting it. What I'd like to do is get a relatively recent Debian booting, but I think I need a newer uboot for that. Since all the uboot install directions floating around recommend installing it from the Seagate Dockstar environment, I need some advise on where to go next.

Short version
Current situation:

1. Installed Debian Lenny using old chained uboot installation method
2. Seagate Dockstar environment won't boot anymore
3. I can still boot into Lenny

Goal: Get a newer version of uboot installed so I can get a newer version of Debian booting from USB stick