Originally Posted by highend
Thank you rastik.
Unfortunately it doesn't work on my KT. I've transferred e.g. the update_launcher_1.0_install.bin file to the /mnt/us folder (via sftp) and after that I executed your command via a ssh connection (XShell under Windows).
The "Update your Kindle" is still greyed out after these two steps.
It seems I must own a very special version of the KT because the screen orientation change (via the launcher menu) doesn't work here, too.
It's a rooted KT (sponsored, special offer version) with the latest 5.0.3 firmware.
I don't think there is something wrong with your device. I had same problem and it was irritating (I have same firmware as you)... Here is what I want you to do, it solved my problem:
After copying related files to /mnt/us/ disable usbnetworking, unplug then replug USB cable so that it goes to USB drive mode. Then Update it (DO NOT restart!) -> As mentioned previously, this menu entry is only available (not greyed out) when the KT is connected via the usb cable.
Hope this helps!