How To Install Android 4.2.2 Jelly Bean On LG Optimus LTE SU640 via CM10.1

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CM10.1 nightly update is now available for LG Optimus LTE SU640. This custom ROM is developed using Android 4.2.2 Jelly Bean as base. With this ROM you will enjoy a bloatware free, battery efficient and fast LG Optimus LTE SU640. The official ROM for LG Optimus LTE SU640 used to be memory huger as well as comes with very minimal customization. With the help of CM10.1 (aka CyanogenMod 10.1), you can enjoy full hardware of LG Optimus LTE SU640 that powering it inside. Installing this well customized ROM is very easy, all you need to do – first install a custom recovery such as CWM aka ClockworkMod recovery and then follow below guide to flash Android 4.2.2 Jelly Bean based custom ROM CM10.1 in LG Optimus LTE SU640.

Warning!

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This tutorial is only for LG Optimus LTE SU640. Don’t try this guide on any other Android device. Also, we (PrimeHowTo) are not responsible for any damage caused due to the instruction given in this page. Try this at your own risk. However, it is very unlikely that your device will be damaged if you follow all the instructions as it is which are mentioned in procedure.

cyanogenmod custom roms

Pre Requisites:

1. It’s advisable to backup your data prior flashing. I recommend app Helium for this purpose, however you can use any other preferred backup app. [General Guide]

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2. Make sure your device have enough battery power (at least 50% battery power) to avoid any accidental brick. You can install an app like Battery Notifier BT Free on your Android device to check it easily.

3. You must have USB Driver Installed for LG Optimus LTE SU640 in your PC. If you manage to access your phone data after connecting to your computer then you already have USB driver installed. [Download Driver Manually]

4. Make sure USB Debugging is enabled otherwise it’s won’t be possible to transfer file between PC and LG Optimus LTE SU640. By default its enabled, so you don’t have to worry. [General Guide]

5. Your device must have latest available custom recovery installed. [General Guide]

Hope, you already checked all pre-requisites. It’s time to follow the step-by-step guide on how to install Android 4.2.2 Jelly Bean based CM10.1 ROM (nightly build) on LG Optimus LTE SU640.

File Required(Download by clicking on it)

  1. CM10.1 Nightly For LG Optimus LTE SU640 [Filename: cm-10.1-20140216-NIGHTLY-su640.zip]
  2. Google Apps [Filename: gapps-jb-20130301-signed.zip]

How to Install Android 4.2.2 Jelly Bean based CM10.1 (nightly build) ROM on LG Optimus LTE SU640

  1. Transfer downloaded file to your Android device by connecting to PC. Make sure you copied all files on SD Card (avoid coping within folder). Important: Don’t extract any files.
  2. Disconnect your device from computer and then turn off your LG Optimus LTE SU640.
  3. Boot into recovery mode. To do so, press and hold Volume Down and Power button together to boot into Recovery mode [use volume buttons to scroll and Power button to select].
    1. You can also try: How To Boot Into Recovery Without Key Combination
  4. First of all create an image of your existing OS by performing Nandroid backup of your existing ROM which you can restore later if this new ROM don’t perform the way you want or if there any glitch. To do so, select Backup and Restore, then on the next screen, select Backup again. Go back to main recovery menu after backup is complete.
  5. Now, perform data wiping task. To perform this, select wipe data/factory reset, then select Yes on next screen to confirm your action. Wait few minutes till the data wipe is complete. Now come back to CWM recovery main menu. Select wipe cache partition and after wiping process done, select Wipe Dalvik Cache under advance option to perform Dalvik cache wiping. Perform this step 3 times to avoid any bootloop issue.
  6. Select install zip from sdcard, then select choose zip from sdcard. Now, locate the CM10.1 Zip file that you copied earlier in Step 1 and select it by pressing Power button. Confirm installation by selecting Yes – Install _____.zip on the next screen. The ROM installation will begin.
  7. Once the ROM installation process end, repeat the Step 6 but choose the gapps-jb-20130301-signed.zip file instead of ROM zip to install the Google apps package.
  8. When installation is completed, perform the Step 4 one more time and then go back to the main recovery menu and select reboot system now to reboot your LG Optimus LTE SU640 and boot into Android 4.2.2 Jelly Bean ROM CM10.1.
  9. Returning to Previous ROM: To go back to your previous ROM, boot into recovery, select backup and restore then restore your previous ROM by selecting it from the list.

That’s it! You just learned how to update your LG Optimus LTE SU640 to Android 4.2.2 Jelly Bean custom firmware using CM10.1. Explore the latest Android 4.2.2 Jelly Bean based CM10.1 ROM. [Note: You may require a rooted device to enjoy all CyanogenMod features]

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