Hello,
All of the GDU 450/455/460/465/470 displays used in a G3X Touch system use the same software regardless of whether there are being used as PFD1, PFD2, PFD3, MFD1, MFD2, or MFD3 (up to 6 displays may be installed).
If you have GDU 4XX V8.92 loaded, you have the most recent software for your GDU 470 display.
I believe you have a GDU 460 PFD. Are you trying to jumper your GDU 470 to be something besides a MFD?
A 2 display G3X Touch system can be jumpered for PFD1 + MFD1, or PFD1 + PFD2. See page 26-25 of the Rev. AP G3X Touch Installation Manual.
Steve