A new Android 6.0 Marshmallow custom ROM has been successfully ported by TeamJB from Nexus 6 allowing the software version to upgrade LG G3 units. However, the download will only be available to select LG G3 devices, including D858HK (Hong Kong), D855 (European region), and D850 (AT&T).

G3 can now be updated to Android 6.0 Marshmallow's third developer preview based on Nexus 6 which has build version V20e. As far as the Android community is concerned, G3 is the first lucky device to get ROM support of Android 6.0 Marshmallow.

TeamJB first released the version 2.0 of the update last September 16 with a few fixes and overall system performance improvements. The android 6.0 Marshmallow ROM also brings with it fixes to camera app issues, boot loop, dysfunctional 4G/LTE, and when phone restarts after 30 minutes. The developer however there are still remaining bugs in the ROM as it is still on beta stage.

LG G2 has been reported to have problems that not any update of Google has patched until now. With TeamJB's ROM developed, the following bugs have been resolved:

• Dialer crashes when calling a number even signals are shown
• Messaging app crashes/fails to launch
• Dysfunctional Gallery
• Dysfunctional 3G
• Dysfunctional Airplane mode
• Bluetooth error
• NFC error
• LG app force closing
• Internet and other system issues

Make sure to back up all necessary stored data and storage has enough memory space. To proceed with the installation, here's a good way to go:

1.     Download Android Marshmallow ROM on your PC and device.

2.     Plug out the phone from the computer if it is and turn it off.

3.     Turn the phone into recovery mode. If device is rooted, use Quick boot app to boot into recovery, or by pressing and holding the volume down and power buttons together for a few seconds.

4.     Perform a nandroid backup.

5.     In TWRP recovery select Wipe and then Advanced wipe. On the next screen select options such as Dalvik cache, System, Data and Cache. Then do a swipe on the swipe to wipe option.

6.     Return to the main recovery menu once wiping task is completed and select Install then Storage.\

7.     Go to downloaded file's location.

8.     Select the file and swipe it to begin installing.

9.     When installation is done, restart device.