Finally, i have a working IPS on the 1550 in my Dashboard. But still, some issues remain. Look at my GW list with enabled blades:

Looks good - but what about TP Updates ? TE lists all GWs with TE enabled:

But IPS, AV and ABOT do not list it, look at the IPS Update Statuses:

You will only see in Device & License Information of the 1550 (or CLI) that it is updated - it does show IPS not updated, but the Version is the newest one:

Hard to explain this to customers...
CCSP - CCSE / CCTE / CTPS / CCME / CCSM Elite / SMB Specialist