I am having similar issues. We wiped the drive and tried to forced update through the altboot on a C8045. I have narrowed it down to one of two things because I was finally able to get it to work correctly on one of the machines. Either updating the firmware to the most receent firmware before wiping the drived worked or the allow firmware update needed to be turned ont. Not sure if it is one or the other or both.
Thanks for the advice @gabiene. I would dive into it.
Do you know if there is a special boot mode, similar to the Versalink, where you can hold the Home and Power button down until a Special Boot Mode appears?