Nexus 4 users can now enjoy the latest Android 4.3 JWR66V Jelly Bean Over-The-Air (OTA) update, thanks to the release of latest Jelly Bean firmware from Google at the recently held new Nexus 7 launch event in New York. The JWR66V stock firmware was earlier ported to Galaxy S4 I9505 and Galaxy S4 GT-I9505G (Google Edition) via leaked system dump files on XDA forums.
As part of the new Nexus 7 launch event, Google has just released the latest Android 4.3 JWR66V OTA update for Nexus 4, Nexus 7, Nexus 10 and the Galaxy Nexus. The update should be soon available for other Android devices as well.
Key Points to Note
- The JWR66V Jelly Bean firmware and these instructions are meant for the Google Nexus 4 model only. Do not attempt installing this firmware on another variant or device, as it may inadvertently hard-brick or damage the device. Verify the device model number by navigating to Settings > About Phone.
- Back up data and settings via a recommended custom recovery tool such as ClockworkMod (CWM) or TWRP
- Verify appropriate USB drivers are installed for the phone on computer (download Nexus 4 USB drivers)
- Ensure USB debugging mode is enabled on phone by navigating to Settings > Developer Options (if device is running Android 4.0 or later) or Settings > Applications > Development (if device is running Android 2.3 or earlier). If device is running Android 4.2, perform the following steps:
- Go to Settings > About Phone
- Scroll to bottom of screen and select Build Number
- Tap phone's Build Number seven times to unlock or reveal hidden developer options under Settings. Then select checkbox to enable USB debugging mode under Settings > Developer Options.
- Ensure phone has at least 80% battery charge to prevent unexpected device shutdown (due to battery drain) while installing ROM.
- Ensure both device and its bootloader is unlocked.
- Verify the phone is rooted with ClockworkMod Recovery (CWM) installed (For Rooted procedure only).
- Make sure that the phone is already running on Android 4.2.2 JDQ39 official base firmware before you proceed.
- If device is stuck at booting or experiences boot loop issues,Wipe Cache Partition and Wipe Dalvik Cache a few more times before rebooting.
- Allow newly installed ROM to stabilise for five minutes before using the device.
- If a Status 7 error message flashes while installing firmware, it could be due to an incompatible device or absence of a necessary kernel (for instance, a Jelly Bean Kernel must be installed before installing any Jelly Bean ROM)
- Instructions provided in this guide are meant for reference purpose only. IBTimes UK reminds readers it will not be held liable if device is damaged or bricked during or after firmware installation. Users are advised to proceed at their own risk.
How to Install Official Android 4.3 JWR66V Jelly Bean OTA Update on Google Nexus 4 [For Non-Rooted]
Step 1 - Download Android 4.3 JWR66V Jelly Bean for Nexus 4 on your computer and Rename it to update.zip.
Step 2 - Connect and mount the Nexus 4 USB storage on computer via USB cable.
Step 3 - Copy/paste the update.zip file to the root folder on your phone's SD card.
Step 4 - Power off the phone and boot it into Bootloader Mode. To do so, press and hold the Volume Up, Volume Down and Power buttons till you see the Fastboot menu and START on top.
Step 5 - Follow the onscreen navigational instructions and tap Volume Up button several times until the RECOVERY option appears. Then press Power button to select it.
Step 7 - At this moment an exclamation mark appears on the screen. Again hold Volume Up and Power buttons together until the device boots into Recovery Mode.
Step 8 - Choose update from SD card option and then browse to update.zip file and select it by pressing Power button. The firmware installation should now begin.
Step 9 - Once the firmware installation completes, the phone will reboot and the first reboot might take about five minutes to complete. So, leave it alone.
Nexus 4 is now running on the official Android 4.3 JWR66V Jelly Bean OTA update. Go to Settings > About phone to verify the firmware installed.
Now that we have seen a step-by-step guide to install the latest official stock firmware for non-rooted Nexus 4 devices, users with rooted smartphones can also manually update their device to latest Jelly Bean firmware using our guide given below.
How to Install Official Android 4.3 JWR66V Jelly Bean OTA Update on Nexus 4 [For Rooted]
Step 1 - Download Android 4.3 JWR66V OTA Update for Nexus 4 on your computer.
Step 2 - Connect and mount the Nexus 4 USB mass storage on computer via USB cable.
Step 3 - Copy/paste the Android 4.3 firmware zip file to the root folder on your phone's SD card.
Step 4 - Power off the phone and boot it into Bootloader Mode. To do so,press and hold Volume Up, Volume Down and Power buttons until the Fastboot menu and START icon appear on top of the screen.
Step 5 - Follow the onscreen navigation instructions. Now tap Volume Up button several times until the RECOVERY option pops up and then hit Power button to select it.
Step 6 - In ClockworkMod recovery, navigate to Flash Zip from SD card option and tap Power button to select it.
Step 7 - Hit the Power button again and select Choose Zip from SD card.
NOTE (Optional): You may turn OFF signature verification from the Toggle Signature Verification option.
Step 8 - Use volume keys to navigate to Android 4.3 JWR66V firmware zip and choose it by tapping Power button. Confirm the firmware installation on next screen and the installation process should begin.
Step 9 - Once the installation is done, select Go Back and reboot the phone by choosing Reboot System Now from the Recovery Menu. The phone will now reboot and it may take about five minutes for the first boot to complete. So, please do not interrupt the process.
Your Nexus 4 is now running on the Android 4.3 JWR66V Jelly Bean stock firmware. Go to Settings > About phone to verify the firmware version installed.
[Source: Team Android]