thanks for the response, sabredog ... and the welcome desertgrandma...I've been a lurker for a while! LOL
I've been communicating with David, the Manager of Kobo Customer Care in Canada - who I must say has been fantastic!
and ... I have located a Borders store in Melbourne where a young woman who worked for Kobo until recently is doing the flash upgrades for customers. They have also been very supportive.
It will be a 5+ hours trip for me, but one I think will be well worth making.