The Google Nexus 7 tablet has received a new Jelly Bean update that will install the Android 4.1.1 build number JRO03C firmware over your current Jelly Bean 4.1 ROM. Read the instructions listed in this article and you will learn how to update the Nexus 7 manually before the OTA update will be pushed for your tablet. If you cannot complete the JRO03C firmware then you should ask for help in comments.
This JRO03C Jelly Bean firmware works only with the stock Jelly Bean ROM and it won’t work with modified kernels or ROMs. It will work with rooted devices on unlocked bootloaders but in case you have a modified ROM then you shouldn’t try to update. Before you can move to the first step tutorial you have to read the preparation info and learn what actions you need to take in order to correctly configure the computer and your device for the Jelly Bean 4.1.1 JRO03C firmware update.
Here’s what actions you need to take so that you’ll manage to install the update at your first attempt:
- Use stock recovery or CWM recovery if you have it installed.
- Install it only on Google Nexus 7 tablets that are stock Jelly Bean.
- If you use CWM recovery to flash the files then you should disable verification option. This can disabled using the CWM Recovery menu. You won’t be able to update using CWM if the verification is enabled.
- Enable USB debugging.
- Charge the phone’s battery and this will prevent it from discharging during the firmware update process.
- It works with rooted devices with the unlocked bootloader.
- Apply this update at your own risk. It is recommended for you to be an advanced user. We cannot be held responsible in case you damage or brick your phone.
I think that this is all the extra info you require and now you’re set to begin the installation of JRO03C firmware on your tablet. Make sure that you don’t skip any of the steps listed below as you wouldn’t like to repeat the entire process once again.
How to install JRO03c Jelly Bean 4.1.1 on Google Nexus 7:
- Download the JRO03C firmware zip file from HERE.
- Connect your Google Nexus 7 tablet to your computer and transfer the file downloaded at step on its SD Card.
- Now disconnect it from your PC and power it OFF.
- Boot into Recovery mode by pressing the holding the following buttons: volume down+ volume up + power. Wait until the custom recovery mode screen appears and then use the volume rocker keys to navigate through the menus.
- First thing you need to do is to select ‘install zip from sdcard’ and then select ‘choose zip from sdcard’. Note: If you’re using the CWM Recovery you should select ‘toggle signature verification’ and disable it.
- Now find the zip firmware file on your phone’s SD card and confirm that you wish to install.
- When the update is complete you need to return to the main recovery screen. Choose ‘reboot system now’ and now your tablet will boot normally into Android 4.1.1 Jelly Bean.
That’s all you had to do in order successfully update your Google/ ASUS Nexus 7 device to the latest firmware build number. In case you cannot complete the installation, then you should use the comments section and ask for our help. Remember that this guide will work only with stock Google Nexus 7 firmware.
In case the update isn’t applied from your first attempt, then you should re-try once again and eventually all files will be successfully updated. To check that the JRO03C firmware has been installed you should open Settings, then open the ‘About Phone’ and there you should have the name of the currently installed Android OS.