It is clear that this update is only for the Nexus 4, the Nexus 7 (2012) and Galaxy Nexus (yakju).
Before Gadget modder clarify that since we are NOT responsible for any damage that may occur to your device during the process. Also keep in mind that this will erase all content on your phone so it is advisable to make a backup.
1 – Before you begin, you must have installed the Android SDK and drivers for your phone on your computer.Download Android SDK
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2 – Then, you must download Android 4.3 for your device and save the file. Zip Platform-tools folder of Android SDK: