[PVE-User] can not update from proxmox 2 beta to rc1

[Stefan]

Hello all,

I want to update to proxmox 2 beta to rc1, having:

pveversion -v

pve-manager: 2.0-38 (pve-manager/2.0/af81df02)

doing
aptitude update && aptitude full-upgrade
nothing is updated!

Can someone help?
tia
stefan