I just need some help on AotI
I've just started my playthrough on PSU:AotI, and through feeding my Partner Machine in PSU:Extra Mode, I accidentally ended up with a different model than I planned.
Now I've read up that there are PM Devices and EX Devices, and if my info isn't wrong PM Devices are used to upgrade a PM within it's series/model-type (Such as turning a GH420 into a GH421), and EX Devices are used to change your PM's Model-type altogether (Such as changing a GH420 to a GH450).
Now what I need help on, and I can't find out anywhere online (at least I can't figure out how to search for it specifically). Are PM/EX Devices available in Offline PSU:AotI? Or do they only become available after a completing a certain chapter?
Since the servers for the PS2 version are shut down It would really suck if I had to use a PM Device ZERO. Although if all I have to do is play until a certain point I can deffinitely be patient and stick it out.
Thanks for any help/info you can give me on this.
(Btw sorry if I'm posting in the wrong place.)