LINEAGE OS 14.1 [Android Nougat 7.1], the successor to Cyanogen OS is now available officially for the LG G3 (Sprint) (ls990). The ability to install a custom ROM on your Android device has been a key benefit for tinkerers and developers since the early days of the platform. The selection of ROMs has changed over the years, but through it all there’s been CyanogenMod. This ROM has supported the most devices and introduced the most features of any custom build of Android.
We’ll be actively updating the download links. Lineage OS is much more improved and have some unique features of its own. Users preferred CM ROMs over stock OEM ROMs because of the customization features. Also, the official Lineage OS builds is very reliable and can be used as a daily driver. Installing a custom ROM on a mobile requires the bootloader to be unlocked on this mobile phone, which may VOID your warranty and may delete all your data. Before proceeding further you may consider backup all data on the phone. You are the only person doing changes to your phone and I cannot be held responsible for the mistakes done by you.


  • This is new [Official] Lineage os 14.1 [Android 7.1] firmware has to be installed on the LG G3 (Sprint) (ls990) model only; if tried on other devices, it might get bricked [To check your device model: Go to Settings >> About phone >> model number].
  • Make sure the device is Rooted before going forward for Lineage ROM installation.
  • Make sure to back all the data by installing TWRP in the smartphone.
  • Make sure the device has more than 80 percent battery.
  • If you face force close, go to Settings >> Setupwizard >> Give permission

Official Lineage OS 14.1 [ Android Nougat 7.1] Download Links :-

ROM Download link of Official Lineage Os 14.1 for LG G3 (Sprint) (ls990)

Lineage Nougat GApps download link for LineageOS 14.1

Step-by-step installation guide

Step 1: Download LG G3 (Sprint) (ls990) [Official] Lineage OS 14.1 [Android 7.1 ] Nougat  ROM and Google Apps
Step 2: Place the downloaded  [Official] Lineage OS 14.1 [Android 7.1 ] Nougat  ROM and Google Apps into the phone’s storage memory.
Step 3: Turn off the device.
Step 4: Perform Recovery mode sorties by long pressing Volume Down + Power key Simultaneously.
Step 5: Once entering the TWRP Recovery menu, clear phone’s memory (full) by selecting ‘Wipe’ option. Once done, select – ‘Swipe to Factory Reset‘ perform factory reset.
Step 6: Return to TWRP Recocery menu and tap ‘Install’ and Select Downloaded Lineage.Zip file.
Step 7: Approve the installation by ‘Swipe to Confirm Flash’
Step 8: Flashing of the ROM begins and after few minutes, a message ‘Successful’ appears on the screen, thus completing installation.
Step 9: Return to TWRP Recovery settings and tap ‘Install’ this time Select Downloaded GApps.Zip file in the phone’s memory.
Step 10: Approve the installation by’Swipe to Confirm Flash
Step 11: After few minutes, a message ‘Successful’ appears on the screen, thus completing Installation.
Step 12: Now Reboot your Mobile
Note:- If faced with boot loop problem, navigate back to TWRP settings, and select ‘Wipe cache/dalvik’. This procedure will help resolve any issue with regard to custom ROM installation

That’s it! Your Smart phone should now have Official Lineage OS 14.1 ROM installed ! Go to Settings > About phone to verify.


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