Hey Mar
these are good news.
Dont warry about Pisang Raja it will sprout as soon as it feels ready, maybe even with new pup instead that one. As I can see from picture it is a live. Have U checked the roots? One of mine IC corms was like that for a long time and pushing all energy in one single root. Funny, right? Now its forming new litlle horn and prepare to pop up from the side of old pup.
It will be fine
.