PinkTissue, I work for DA Direct - the suppliers of ECO Readers. It's usual for Australian companies to close for 2-4 weeks over Christmas/New Year. Our helpdesk will be back up and running on Monday 11th January and they'll respond to any queries you've sent them.
If you send me a PM with your email address, I'll send you the details for downloading the latest ECO Reader firmware. The staff at DA Asia in Singapore can also supply you with these details.
There's no limit on how many times you change your firmware, but the ECO Reader firmware has features we've requested - I think it's worthwhile for you to try the latest version.