Upgrade Firmware

This device is not new to android development ecosystem and has got almost all versions of android from ics to kitkat and now its got the latest version too. You can now Update your lg optimus 4x hd p880 to latest version of android lollipop that is android 5.1.1 by flashing cyanogenmod 12.1 custom rom.

Since it is an old device and hasn't received any official firmware updates after 4.1 all the roms there after including the latest lollipop version too have been compiled with jellybean kernel sources which means there might be some problems or bugs for sure.But you can ignore those bugs and flash this on your optimus 4x hd P880 and enjoy its features.

As flashing is a risky process we don't take any responsibility if you brick your device.Even though the chances of bricking it are very less or none but if you brick your optimus 4x hd p880 then even the magic light from the glory of Satan mayn't bring it back to life , so proceed at your own risk.

This is not an official firmware from cyanogenmod and it has been compiled by xda senior "laufersteppenwolf" ,a big thanks to him and owe you for bringing this amazing rom for optimus 4x hd as it could be base in future for other roms.
Prerequisites:

• Check you optimus 4x hd model number first and confirm that you are using P880.This is essential as flashing rom on other variants like on Korean or carrier variant might cause issues or even brick it.
• Make sure that lg mobile utility drivers are already installed on your computer.If you don't have them do install then as transferring rom to device might need drivers.You can download even on mobile if you don't want to use computer.
• You must have updated it to latest official software version that is available if you are starting from scratch.
• Root: You need to have root access on your optimus 4x hd P880.
• Backup:Backup all your data which includes contacts,apps,photos videos etc everything to computer or any cloud networks as flashing  unofficial cm 12.1 custom rom on 4x Hd might erase all the data on your device.
• Battery: Charge your Lg P880 to 900% so that you wont encounter any battery related problems while flashing this rom.
• Backup Efs partitions: This is for those who already have twrp recovery installed.Backup all your efs partition of your Lg optimus 4x hd on current Rom or firmware.Just in case if you loose signal or imei  you can just restore it back.
• Custom recovery: You need a custom recovery installed on 4x Hd p880.Without it you can not flash roms at all.
• You must have a unlocked bootloader.Of course you cannot flash rom on locked bootloader.
• Downloads: Cm 12.1 for lg optimus 4x hd  and google apps and transfer them to internal storage.

Cyanogenmod 12.1 custom rom on Lg optimus 4x hd p880:

Cyanogenmod 12.1 custom rom for lg optimus 4x hd P880

About cyanogenmod rom:
Cyanogenmod is one of the best custom roms available in android development ecosystem.They support lot of devices.This rom is based on android open source project with lot of added features. Being an unofficial rom and also compiled using jelly bean sources its quite common to have bugs for sure and you might even encounter force closed if you flash in compatible gapps.But if you want to taste lollipop on your optimus 4x hd then you have to flash this for sure.

cyanogenmod rom optimus 4x hd

General Features:

• Theme engine: Theme engine is from the cyanogenmod custom rom which basically changes the look user interface from lock screen  to ring tones all the way up to boot animations.The speciality of the theme engine is the ability to choose individual elements of every theme you have installed.So you like the ring tons and wallpapers of one theme and icons of other theme then you can have them at a time.Just open the theme chooser and you will understand how to do it.
  
• Performance control:A default cpu manager app to control frequencies and governors.You can adjust cpu frequencies and also set them on boot too.
• Trebuchet: This is the default launcher that ships with cyanogenmod rom.But if you flash gapps then you might loose this.It doesn't have too many features like nova or other launchers but its simple and fast.
• Software Updates: Cyanogenmod rom is usually available in three types one is nightlies which gets updated with new features every night and are quite stable for daily usage.second one is the snapchat which is monthly build version which will be stable version and other one is the release candidate.Some times nightlies are considered must stable than the snapshots. 
• Status bar Tweaks:Status bar has lot of tweaks which include a brightness slider.Slide in status bar to adjust brightness of the screen.Double tap on status bar to sleep device and also network speed indicator for on going traffic info.
• If you root apps dont work then that is no response form super user it means it has been disabled and you can enable it in developer options easily.

Flash cm 12.1 on P880 using cwm/philz recovery:

This is a simple tutorial helping you to install cyanogenmod 12.1 custom rom on your lg optimus 4x hd p880.If you are unable to follow or have any queries just leave a comment below or contact us.