Blow in auto ... I don't know how do with the IA. So all is manual !
To answer to your question ... myself i don't know for the strobe, when I put the GP15 UPY it work already.
Apologies for no sound, I uploaded as a different file format to my usual one b/c of the video's length and something (eg YouTube) borked up.
The video is 28 minutes long and available in 720 HD flavour, no apologies for that!!! It's a big route now that I've been workin on over the last twelve months, so grab yerself a coffee and N joi