Download at the usual place:
http://www.jinke.com.cn/Compagesql/English/service/update.asp

This one includes the mobi support
Hello... I've been a long time user of the V3, but have never bought a mobipocket book. Usually I just use Book Designer to convert from other formats to fb2.

However, I intend to buy The well of ascension. Does anybody know if the V3 support for mobipocket files will be enough?

Thank you in advance.
I don't have a V3, but this is a standard MOBI ebook with DRM that should be readable on your V3. You will need to give the bookstore the PID of your V3 before you download the ebook. If you use Windows MobiPocket Reader (undated for the V3) and you have connected the V3 via USB, this should be listed under the Reading Devices icon.

However, note that mobipocket.com is always the most expensive place to buy MOBI ebooks. This one is $7.99 at Books on Board. Fictionwise is another highly rated site for ebooks.
Thank you very much, wallcraft. I'll buy the book as soon as I have my V3 with mobipocket support

However, I'm afraid I made a mistake trying to update my lbook V3.

I tried with the latest version and it doesn't get past the "5. Update Resource" step. If I try to reboot, the V3 hangs. I tried with another firmware, same result. Any idea?
Nevermind, it didn't work with a Sandisk SD card, but it did with a Toshiba 512 MB one.

Now, let's head for Books on Board.
V2.01EN 2008-12-04 published with the following set of changes:

1. Add pdb parser
2. Update chm parser
3. Update pdf parser
4. Update epub parser
5. Support pdb files which use "REAd" as create id
6. Improve Mobipocket format.
I've uploaded it to rapidshare:
http://rapidshare.com/files/171554831/V3update-hanlin-2.01EN-20081204.rar
Thanks JammyZ
New update:
V2.01EN 2008-12-12
Description:
1.Upgrade mobipocket format.
You gotta love those descriptions. I think I'll wait for the next BeBook firmware version to come out - the description will then hopefully be at least vaguely helpful...