We had to confirm each packages through Maintenance Optimizer. I’ve found the way to bypass maintenance optimizer:

go at http://service.sap.com/patches and add all patches you want to download basket

you can go into SE37
choose function module /TMWFLOW/MO_UI_BASKET_AUTHORIZ
choose SINGLE TEST
click on EXECUTE
choose packages and click on CONFIRM

there ya go, you can download using SAP download manager… and avoid Maintenance Optimizer.