My iLiad has been switched Chinese MAC database to get support for EBA format. EBA is a special ebook format developed by JCNIP and it works even better than PDFs in iLiad.
But after upgrade to version 2.7, I couldn't read any EBA books, what happen to the EBA format? iLiad would not support EBA from now on?

I noticed that iRex has not published a 2.7 User Manual in Mandarin.

Perhaps they need a few more days.

or maybe they just forgot, that you wanted the chinese version.

Or, the forgot that there is a Chinese version.

Well from the iRex guys:

"We will fix that today and you will have to connect to download the EBA viewer again."

Fix for the fix ;)

What I know is that the 2.7 User Manual in Mandarin is translating by www.iRexReader.cn, maybe the switching (for European version) to Chinese iDS doesn't work this time. One Chinese iLiad user said that his iLiad (Chinese version) still supports EBA after upgrade to 2.7