Hi, I spent two days fighting with my reader and reading lots of threads trying to fix my reader which was completely freezed in the start up screen. I am in caracas so i couldnt even return it so i was pretty pissed off, specially because this is my second unit ( the first one died on me after a couple of weeks i got it and had to return it) since this forum was helpfull though i didnt find the specific solution i want to collaborate with my experience.
One morning i found the reader on the start up screen, i couldnt soft or hard reset it, and it didnt show on three different computers. looking here i decided to charge it overnight (actually im not that patient i tried resetting it like a hundred times then i quit and charge it overnight).
Next morning was the same but i noticed that if i pressed reset then turn it on it would try to function then it would die again. did this like ten times but nothing.
I had no books in the unit they were all in the mmc card (may be the problem) still the first thing i did was to remove the card.
Then i realized that if i resetted the unit then turn it on then plug it in the computer it would show in my pc.
So i formatted everything. the reader and the mmc card, i used fast format in fat 32. I thought that would destroy the software and lost the reader for ever but i was desperate.
When I unplugged.... IT WORKED!! awesome i heard angels singing.
I inmediately put back 100 books in rtf in the mmc card and internal memory (270mb)
So far it is still working, i still dont know what went wrong in the first place maybe because i didnt use the library to upload the books in the mmc card. maybe the mmc card is not fully suported (it had worked well for 5 months). Maybe a virus (my pc shows a trojan once in a while). Could have also been that i ran completely out of battery and that messed up the software (the bar was full though). Anyway now it is working and i hope this comment helps someone who has the same problem.
I didnt try the firmware update or the unbricking metod because the instruccions in the wiki page shows steps for a 500 and mine is a 505 by the way.
pd. I have like 120 rtf books in spanish (well formatted with autor and title) mostly history if any spanish speaking people want to exchange out there.