Hi Paola,
My fw is 15.4 (17.10.2011)
http://dl.dropbox.com/u/39132661/Use...0_Plus(EN).pdf
EDIT:
I watched a bit and found that
my pb360+ is model 511 with processor FreeScale i.MX35 ARM11 533MHz,
and yet there is a new model 512 with fw 15.6 and processor Freescale 800MHz.
I'm wondering if I could install 15.6 fw on my model???