Paulo,

we're running DSS from USB DOMs and have got used to simply switching the DOMs,,, that way, we even have fall-backs in case of massive trouble.

Updating online has worked for us until *several* releases ago, since then we only had errors. But as most of the configuration is stored on-disk (not the DOM) and the DSS has to be rebooted anyhow, swapping DOMs has turned out to be the most trouble-free way.

Regards,
jmo