Default Upgrading Dell Axim X3 to Windows Mobile 6

Hello all, I was recently given an older Dell Axim X3 and I'm trying to figure out if it's possible to upgrade it to Windows Mobile 6 (or even 5). I can never leave things well enough alone so I figured it would be a neat trick to get it running on there, it looks like it should handle it spec-wise. Looking under the battery the unit says Rev A03, it does have wifi built in. Going to system info I get:

Model: Dell Axim X3
Processor Type: Intel XScale
Processor Speed: 400MHz
RAM Size: 64MB
ROM Size: 64MB
ROM Version: A00(09100300EN)
Language: English
Wireless Attend...: WirelessLAN
(left the UUID out, if this is necessary information let me know and I will post that too)

About shows: (Leaving out the non-interesting info)
Microsoft Pocket PC
Version 4.20.1081 (Build 13100)

I saw on Dell's website they have a software upgrade to A01 for it but that's still just the 2003 OS. Is it feasible to get WM6 or 5 running on this?