Yes.
Quote from first post (emphasis added):
Quote:
Installs a pristine 3.4 (K3), 4.1.1 (K4), or 5.1.2 (KT) firmware
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To get a completely "factory fresh" device:
1. perform a factory reset on the device.
2. Plug it to the computer and delete everything on the Kindle disk.
3. Use Kubrick, and check the option to wipe the internal data partition, and to reinstall the TTS files.