How To Update Official LG G3 Sprint CM13 (CyanogenMod 13) Marshmallow Custom ROM (ls990)

GCam Port | Google Camera APK v9.2 (May 2024) Forums LG Device Forums G3 Sprint – ls990 How To Update Official LG G3 Sprint CM13 (CyanogenMod 13) Marshmallow Custom ROM (ls990)

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    Linux User

    LG G3 Sprint CM13 (cyanogenMod 13) Marshmallow ROM (Device Codename: jfltetmo) goes official on CyanogenMod servers. Official NIGHTLY build are automated builds which makes sure the build is not broken by daily code changes made by developers. NIGHTLY builds are not stable as compared to SNAPSHOT builds and may contain some minor bugs. Here is some brief explanation of the difference between a NIGHTLY and SNAPSHOT.

    Installing custom ROM requires a custom recovery to be installed on your device, which may VOID your warranty and may delete all your data. Before proceeding further you may consider backup your all data or take a NANDROID backup using a recovery. You are the only person doing changes to your phone and I cannot be held responsible for the mistakes done by you. Neither the developer nor we will be held responsible for any disaster that happens to your device.


    LG G3 Sprint CM13 (CyanogenMod 13) MARSHMALLLOW CUSTOM ROM


    Root binary is inbuilt since CyanogenMod 12, so you don’t need a separate SuperSu package to install to gain ROOT access. Here is How to Enable ROOT Access on CM13/CyanogenMod 13

    For more Custom ROMs, TWRP Recovery Installation guide, Rooting Guide you can have a look at the LG G3 Sprint forum and also you can subscribe to stay updated for this device specific topics.


    1. Follow this if you are flashing CyanogenMod 13 for the first time to your Sprint LG G3, or coming from another ROM:

      This will delete all your data on your phone. You may consider backing up your phone data or take a nandroid backup. Here is how to take NANDROID backup using TWRP recovery.

      Points to NOTE:
      – Try to avoid restoring apps backup using Titanium Backup. It may break things up.
      – Don’t restore system data using Titanium Backup! It will definitely break the current installation.
      – It is also discouraged to Restoring Apps + Data using Titanium Backup.

      • Make sure you have a TWRP installed on your LG G3 Sprint.
        If you don’t have a recovery then download it from the above link and follow the below guide (Make sure the bootloader is unlocked):
        How to flash TWRP using fastboot.
      • Download and Copy the GApps and CyanogenMod ROM ZIP to your device.
      • Take a backup using a synchronization application or using Samsung Smart Switch or if you have TWRP installed then you can take a NANDROID backup using the TWRP itself.
      • Boot into Recovery. Make sure to have already flashed a Custom recovery like CWM or TWRP on the phone.
      • Wipe data factory reset, Cache partition, Dalvik Cache and Format the System partition.
        – Here is a guide explaining how to wipe data using TWRP recovery.
      • First flash the CM ROM ZIP from device. Then flash the GApps zip from your device memory.
        – Here is a post explaining how to flash a custom ROM using TWRP recovery.
        Use the same guide to flash the GApps too.
      • Reboot and Enjoy the CyanogenMod 13 Marshmallow ROM on your LG G3 Sprint.
    2. Upgrading from earlier version of CyanogenMod 13.0:

    The first boot may take long time, so don’t panic and be sure that you have enough battery backup. Let the phone reboot and then enjoy the official CyanogenMod 13 Marshmallow ROM on LG G3 Sprint.

    After this CM13 installation you may want to enable ROOT access on your phone and here is how you can do that:
    How to Enable ROOT Access on CM13/CyanogenMod 13.

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