How to Install Android 4.1.1 JRO03C on Nexus 7
We have put together a detailed step-by-step instructions guide on how to install Android 4.1.1 JRO03C on the Nexus 7. If you are used to installing custom ROMs on your Nexus 7 tablet, then this should not be any different for you. However, for beginners, you need to root your Nexus 7 and install a custom recovery. Please read the tutorial once before you actually perform it.
Just To Remember:
- This Android 4.1.1 JRO03C is only for the Nexus 7 tablet.
- Your tablet should have ClockworkMod recovery installed. Please make sure you have this recovery!
- Make a Nandroid backup of your previous phone set up before proceeding – for just in case anything goes wrong.
Complete Step-By-Step Instructions:
Step 1 – Download Android 4.1.1 JRO03C (signed-nakasi-JRO03C-from-JRN84D.zip) for Nexus 7 on your PC, if you haven’t already.
Step 2 – Connect and mount your Nexus 7 USB memory on your computer using the USB cable.
Step 3 – Now copy/paste the signed-nakasi-JRO03C-from-JRN84D.zip file to your SD card. Make sure the file is in the SD card root.
Step 4 – Then turn off your phone.
Step 5 – Now to get in the bootloader mode. Turn on the phone while pressing and holding the Volume Up + Volume Down and Power buttons.
Step 6 – Follow the navigation instructions on the screen. Select BOOTLOADER and then go to RECOVERY.
Step 7 – In ClockworkMod recovery, scroll down to “flash zip from SD card” and press the power button to select it.
Step 8 – Press the power button again and select “choose zip from sdcard”.
Step 9 –Now using your volume keys, navigate to signed-nakasi-JRO03C-from-JRN84D.zip and select it using the power button. Confirm the installation on the next screen and the installation procedure should start now.
Step 10 – After the installation completes, go to “+++++Go Back” and reboot the phone by selecting “reboot system now” from the recovery menu. The phone will boot now and it might take about 5 minutes to boot on your first time. So, please wait.
That’s it! Your Nexus 7 should now have Android 4.1.1 JRO03C firmware installed on your tablet! Go to Settings >About phone to verify.
Have fun playing with it! If you have any issues, please fire them up in the comments below!
If you’re still not interested in trying out Jelly Bean (Android 4.1) on your phone, try some alternatives: