Item temporarily unavailable
Hi,
I recently purchased an iMac 21.5 2011 model off eBay and every time I try to reinstall, I receive the message 'Item temporarily unavailable'. I have no recovery disks, just the monitor, keyboard and mouse. I downloaded iMac EFI update 1.7 as suggested but the computer states there is not enough space to use it. What do I do? Please help.... Oh, and I purchased the computer in the UK but have brought it over to Greece as I live here.
iMac, OS X Mavericks (10.9), I don't know the actual OS X Mav