Google uploaded the Android 4.4.3 factory images for the Nexus 5 and other devices on June 2nd, but the OTA update for the handset only started showing up late last night. Since OTA updates are rolled out in batches, chances of you getting the update almost instantly on your Nexus 5 are slim.

With the OTA link available though, you can always manually sideload it without the need to root your device or do any other hackery. Read below to find out how. 

Step 1: Download the Android 4.4.3 OTA update for the Nexus 5 directly from Google’s server. Rename the file to ‘kitkat.zip’ and transfer it inside a new folder called ‘google’ on your desktop.

Step 2: Download the ADB/Fastboot files, along with the USB drivers if you are running Windows from below.

• ADB/Fastboot – Mac, Windows
• USB drivers for Windows

Make sure to install the drivers and extract the contents of the ADB/Fastboot ZIP file inside the ‘google’ folder that you created in step 1 on your desktop.

Step 3: Reboot your Nexus 5 into Recovery mode by switching it off, and then pressing the Volume down + Volume Up + Power button simultaneously. After the device boots into bootloader mode, use the Volume keys to navigate to the ‘Recovery’ option and select it by using by the Power button.

If you get an Android logo with an exclamation mark, press the Volume down + Power button for 2 seconds. Also, try pressing the Volume up + Volume down + power buttons 4-5 times in a row. This is going to be a bit finicky, so chances are you won’t get into recovery mode right away.

Also, press the Volume Up button once whilst keeping the Power button pressed.

Step 4: Once your Nexus 5 has booted into recovery, use the Volume key to select the ‘apply update from ADB’ option using the Power key. Connect the device to your PC now, and open a new command prompt window on Windows or Terminal on Mac.

You will now need to navigate to the ‘google’ folder you created in Step 1 using the ‘cd’ command. After that, simply copy/paste the following command:

adb sideload kitkat.zip

Mac owners need to copy paste the following command:

./adb sideload kitkat.zip

The OTA file will then be transferred to your phone, and the installation process will automatically begin. After the installation is completed, your Nexus 5 will automatically reboot as well. The first boot will take some time so please be patient.

You will get an error during the installation process if you have modified the /system partition on your device in any way. Make sure to restore or re-enable any disabled system apps if you are getting a signature verification failed error.