How to Install Custom ROM on LG G3 with TWRP Recovery!

For those of you who’ve never installed a custom ROM on Android smartphones before, here’s a step-by-step tutorial on how to install custom ROM using TWRP Recovery.

Before we begin, I assume you have a rooted LG G3 with TWRP Recovery installed and made a backup ROM.  If you haven’t done all of those three things, please do so before preceding!

Step 1. Reboot into TWRP Recovery.


Step 2. Choose “Wipe”.  This will erase all of your settings, apps, and app data but will not erase contents of your internal storage such as personal photos, video, etc…etc…

You should have also used Titanium Backup app to backup all of your apps, which will allow you to easily restore all of you apps + app data after installing a new custom ROM.



Swipe to wipe your data partition.


Step 3. Choose “Install” from main menu.


Step 4. Choose “Storage”.


Then choose the storage where your ROM zip file is located.  For me, I am using a USB OTG Flash Drive so I chose “USB-OTG”.

If you downloaded the ROM file straight on your phone, it’s probably under “Download” folder in your internal storage.


Step 5. Browse your storage and find the ROM zip file then Swipe to install ROM.


Step 6. You can reboot system now.

*Note – On AOSP ROMs, you may have to install Gapps zip file to get Google Play Store.  If that’s the case, install Gapps zip file like you did with the ROM (without wiping) then reboot.



Step 7. If your phone gets to the Welcome screen, congrats!  You’ve installed your first custom ROM successfully!



Q: My phone is stuck on bootloop, it’s not booting for more than 5 minutes!   (Or it booted fine but you are getting bunch of force-closes.)
A: Try going back into TWRP->Wipe->Advanced Wipe and wipe /system partition then follow from Step 1 again.  Sometimes the system partition gets corrupt but formatting and re-installing ROM will fix it.  Try this at least twice and if you are still in bootloop or having problems, something is probably wrong with the ROM you are installing.  Restore your previous ROM or try another ROM.  (You can also see latter part of the video above for step-by-step video on this answer.)

Q: My cellular data 3G/4G LTE is NOT WORKING!  My MMS is NOT WORKING!
A: Some custom ROMs may require you to set APN Manually.

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3 Responses

  1. Sam says:


    I’ve read all your stuff, watched a few of your videos, and just about ready to try a new rom or 2. But… where are the ROMs? I thought you would have a list on your site, but I haven’t found any.



  2. Lgg3 User says:

    Hi, so i recently download the TWRP recovery, and flashify it. The proplem it when i reboot it into recovery mode and froze at the LG logo, I did try to remove the battery and turn it on again and it worked, but then i put it in recovery mode again and still stuck at the LG logo.So,how can i fix this ?

    Thank you

  3. Furkan says:

    hello my friend
    Shares are excellent.

    but I have a problem.

    After installing TWRP, I’m installing custom ROM, you first boot the phone gives error, the light starts to burn.

    Certification Boot Error

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