This is a follow on from
here.
Because I can get to the SD Image loader screen, I thought I'd try following
this thread to see if I can un-brick it. But I think I need to know what model I have.
After much searching, on Dell's site/forums, I eventually found a copy of the A12 ROM. I would have thought it would have been easier to find.

But, there are 2 versions, depending on the model.
But, as I don't know what model I have, how do I know which file to use.
Should I even be using this level, or should I re-load an earlier one, and then upgrade to this.
Next, I'm not sure I understand about the aku 2.3.1 and aku 1.1 issue. If I'm reading it correctly, I set the length of the .nb0 file for one of those. If it works, I picked the right one. If not, I start again, using the other length. Is that correct. Or does the version tie to a particular ROM level.
Cheers,
Eddie