Hi Guillermo,Correct. You can upgrade from 10.3.x to 10.4.x (10.4.0, 10.4.1, 10.4.2, and 10.4.3) and then upgrade to 21.2.4.https://knowledge.broadcom.com/external/article/136964/dxca-spectrum-upgrade-path.htmlThanks,
Silvio