K3 No books (pdf, txt) dispalyed after unbrick

Hi all,

I wipe out my K3's internal mmc completely. Then I unbrick my K3 with helps of many kind people here. http://www.mobileread.com/forums/sho....php?p=2723828

But I found after coping .txt and .pdf files to documents folder, no files displayed in K3's homepage. The result is no .txt and .pdf files displayed.

The homepage is always: (no matter I copy .txt and .pdf to K3)
- The New Oxford American Dictionary
- Oxford Dictionary of English
- Archived Items (0)

Do you have ever meet this issue and do you have any debug method?

Thanks