Originally Posted by yosoyeleze
how and where should I place the file you attached? Could you explain a little more in detail? thank you very much
You need a root shell (jailbreak) to your KT.
1. Plug in your Kindle and open the USB drive that it creates.
2. Copy the MobiReader-impl.jar in the music folder.
3. Open root shell and rename from /opt/amazon/ebook/lib/MobiReader-impl.jar to /opt/amazon/ebook/lib/MobiReader-impl.jar.bak
4. Move /mnt/us/music/MobiReader-impl.jar in to /opt/amazon/ebook/lib