Re: I give up on my banana...
I admit, it doesn't look good.
I would gently remove it from the pot and even more gently remove the dirt, a little at a time to see if it has any live roots and if the corm is still solid.
After that, I am not certain what to do as it depends on what you find.
If no roots but a solid corm, remove all dead and rotted material and replant in sand, water sparingly and wait.
Probably do the same if it does have roots, just do not damage the roots.
Hopefully someone else who has done this will chime in soon...
Keep us in the loop.
If you lose your head and give up, you neither live nor win.
Varieties I supposedly bought: Manzano, Cavendish, Blue Java, Sweetheart, and Gros Michel.
What it seems I actually have: Brazilian, Cavendish, Namwah, Dwarf Red, Gros Michel, Pisang Ceylon, Veinte Cohol and SH 3640, and American Goldfinger. FHIA 1, Paggi and FHIA 17... Always room for one more.