Bootrom version not appearing in Device Insance Path.

[Splint]

Hi,

I've got a 3gs and I'm trying to establish which bootrom it has. I think I have followed all the steps correctly but the bootrom version doesn't appear like it should from the instructions. The only difference I can see that may make a difference is that the instructions say to look in the Device Instance ID, the nearest option I could see was Device Instance Device Instance Path which shows the following: USB\VID_05AC&PID_1294\26810BEA53403286F950EE397DE6CC51472BD412

Have I done something wrong along the way?

Thanks
Splint