For 104 - Only Android 2.2 has been released. (v25)
for 105 - Only Android 2.3.3 is available on the website (v25)
Hope this helps.
You can try putting the 105 version on the HD104, but not sure what this will do.
Ciao
Ash
Right now there are:
V25 2.2 for HD104 MFG
V25 2.2 for HD104 SD card, much easier to update
V25 2.2 for HD105 with SD card
V25 2.3.3 for HD105 MFG.