Install Jelly Bean Based JRO03H ROM on Sprint Galaxy Nexus
Timely updates are what, you purchase Nexus devices for, that also help you to get custom ROMs. JRO03H is a new custom ROM for the Sprint Galaxy Nexus that based on Android 4.1 Jelly Bean, the ROM is built from official stock JRO03H source codes and also has CyanogenMod 10 modification such as better power menu, CyanogenMod power widgets, lockscreen targets, clock mod, T-mobile Theme Manager, volume wake, better color changer, performance settings and many other MODs and tweaks, thanks to recognized XDA developer member maddoggin.
Read on how JRO03H ROM can be flashed on your Sprint Galaxy Nexus, do keep in mind that the bootloader of your phone must be unlocked, ClockworkMod recovery also should be installed on phone, follow this guide to unlock bootloader, and follow this guide to install touch ClockworkMod recovery, you can also use all-in-one toolkit to do all. Make a backup of your device data such as SMS, internet setting, contacts music files etc because the below procedure may wipe data, you can sync your contacts with Gmail account and for messages use SMS apps, lastly use file expert app to backup apps.
DISCLAIMER: Please proceed the below guide at your own risk, Android Egis will not be held responsible if your device lost data or get damaged following this guide.
Step #1: Download the latest version of ROM from here [XDA LINK].
Step #2: Transfer the downloaded file to phone.
Step #3: Turn the device off.
Step #4: Reboot the device into recovery mode, to do so, reboot phone by holding down volume up, volume down and power buttons, the device will reboot into fastboot mode, in fastboot mode, use volume keys to navigate and power button to select and select recovery option.
Step #5: In recovery mode, create a nandroid backup of your current ROM, it’s important because if anything not work out that you expect from this ROM, you’ll be able to easily revert back to your current state. To create backup select “Backup and Restore”, and then select “Backup” again.
Step #6: Perform full wipe, first select the wipe data/factory reset, and confirm on the next screen.
Step #7: Select Install and locate the downloaded file that you’ve transferred in above step and confirm installation. Wait till installation complete.
Step #8: Once the installation is completed, select “Go Back” after that select “Reboot System Now.”
That’s it, enjoy Jelly Bean JRO03H ROM, do comment below for queries. You can also visit the original thread of XDA link given in step 1.