I've gotten this issue from time to time, and one or two simple reboots fixed it (as in, I just tried once or twice more without changing anything and it got past that point). I haven't been able to identify what makes it occur or not occur.
Too late for me
Now I'm waiting for shipping of the JTAG to reflash uboot.
UPD: BTW support of the newit.co.uk sent me uap8xxx.ko file but at that moment I've already bricked my uBoot.