I do have another HSX109 ISO file that may be 1.10. When I look at the files inside the ISO, they have a date of 19 November 2002. The same files on the known 1.02 ISO are dated 16 January 2002.

I will upload the unknown ISO to Dropbox and you can have a look at it. I'll send a PM shortly...
-Rob Riccardelli
80GB 16MB MK2 090000736