I've managed to unlock it, and flash the ubuntu recovery partition, but the actual system either won't flash, or won't boot properly. It hangs at the SONY logo. ADB detects the device, and I can interface with it through the terminal (reboot it into the bootloader, or recovery). When booted into bootloader, Fastboot requires sudo access to do anything, but otherwise seems to be working.
I was using the instructions listed here; https://wiki.ubuntu.com/Touch/Devices/pollux (new user, system won't let me make it clicky)
I should also note that its the wifi version, no cellular network capability.
So to sum it up, where should I go next, and how do I get this working?