I am trying to complete this and I still can not find how I can download or install the DB on Galaxy. Has anything changed with this tutorial?
Thx a lot
Welcome @Mageiros_Leonardos
Everything is still working as far as I know, but we can confirm that on the server where you are working. 
Are you working at a public Galaxy server? Which one? Find the URL at the very top of your browser window. You can paste that link back here in a reply. Then I’ll help to test and explain what to do.
Xref:
- GTN Tutorial → Hands-on: NCBI BLAST+ against the MAdLand / NCBI BLAST+ against the MAdLand / Sequence analysis
- See the “Available at these Galaxies” pull down menu to find public Galaxy servers where the tutorial is known to work. Right now that looks like all of them!