Recently I purchased an O2 Joggler from ebay (brand new, sealed box

So a few questions;
Should I update to the latest openreach software from birdslikewire before an internal squeezeOS install? I read somewhere it was best to do so. SqueezeOS works great on usb. I presume OS on mine is very old as it was still sealed and actually when I first booted it up it wouldn't find a network connection in the initial setup (via lan)
SPDIF - I have got a cliff electronics OTJ-5, but I can't find anywhere which says what pins on the OTJ-5 are what, i.e 3.3v, ground and signal and also on another thread it said the 3.3v wasn't needed for the spdif mod. Thoughts? Just need to get some suitable wire.
Any input would be great!
Thanks a lot.