Nexus 7 joins the first batch of devices to taste the Android 4.3 JWR66V Jelly Bean Over-The-Air (OTA) update, as Google debuts Android 4.3 with new Nexus 7 launch event in New York. Nexus 4, Nexus 10 and Google Nexus are also privileged to enjoy Android 4.3 Jelly Bean soon after the release, while other Android devices may get it shortly.
Key Points to Note
- The JWR66V Jelly Bean firmware and these instructions are meant for the Google Nexus 7 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 Tablet.
- 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 device on computer (download Nexus 7 USB drivers)
- Ensure USB debugging mode is enabled on tablet 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 Tablet
- Scroll to bottom of screen and select Build Number
- Tap device'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 tablet 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 tablet is rooted with ClockworkMod Recovery (CWM) installed (For Rooted procedure only).
- Make sure that the tablet 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 Nexus 7 [For Non-Rooted]
Step 1 - Download Android 4.3 JWR66V Jelly Bean for Nexus 7 on your computer and Rename it to update.zip.
Step 2 - Connect and mount the Nexus 7 USB storage on computer via USB cable.
Step 3 - Copy/paste the update.zip file to the root folder on your tablet.
Step 4 - Power off the tablet and boot it into Bootloader Mode. To do so, press and hold the Volume Up 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 tap 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 tablet will reboot and the first reboot might take about five minutes to complete. So, leave it alone.
Nexus 7 is now running on the official Android 4.3 JWR66V Jelly Bean OTA update. Go to Settings > About tablet to verify the firmware installed.
Those who have already rooted their Nexus 7 tablet can follow our step-by-step guide below to manually install Google's latest Jelly Bean official firmware.
How to Install Official Android 4.3 JWR66V Jelly Bean OTA Update on Nexus 7 [For Rooted]
Step 1 - Download Android 4.3 JWR66V OTA Update for Nexus 7 on your computer.
Step 2 - Connect and mount the Nexus 7 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 tablet.
Step 4 - Power off the tablet and boot it into Bootloader Mode. To do so, press and hold Volume Up 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 device by choosing Reboot System Now from the Recovery Menu. The tablet 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 7 is now running on the Android 4.3 JWR66V Jelly Bean stock firmware. Go to Settings > About tablet to verify the firmware version installed.
[Source: Team Android]