There is a place in the index system for this information (now) see:
https://wiki.mobileread.com/wiki/K3_Index#Recovery
Which currently only indexes Yifanlu's post about putting the K3 in diagnostics mode.
A post made back in Feb. 2011, to which no one has yet replied.
Perhaps someone has time to investigate K3 Diag Mode further? We do know a bit more about Diag Mode on other models than we did back then.