This comes up a fair amount for Korean learners, but the Assimil Korean book, “Le Coreen sans Paine” – which has been begging for an update for a long time – seems to now be available as a new and updated edition on their website. Looks like it’s a complete rewrite and re-recording. 100 lessons as opposed to 70 in the old edition.
I would love to have had this when I started out, but oh well.