Yes but I would recommend from now on to make dumps only with the ps3 in "cold state", since those are the only ones working for backup/downgrading purposes.
Here's a quote of a comment from NDT himself on the Portal:
"Both ON and OFF state dumps (I call them warm and cold dumps) are proper, these 2 dumps differs in 2 data blocks.
The thing i tested until now is that PS3 can be restored with infectus dump ONLY in COLD state and with COLD dumps.
You shouldn't flash the console while in ON state, then you cannot flash it in OFF state using a warm dump, the only working configuration is flashing the console in OFF state using a cold dump!
To flash and read the console NANDS in OFF state you need to add 4 wires to the infectus setup.
Currently i'm testing other configurations and bad block skipping in the restore process using my infectus NAND programmer 1.37, i'll update the news page with latest results as soon as possible".
I wonder how/where those additional 4 wires should be soldered, but I'm sure we will know sooner rather than later.