After updating your HTC One M8 to Android 5.1using CM12.1 Nightly custom ROM, you must be looking forward to the very latest Android 5.1.1 based custom ROMs. here is one stable, smooth and fast custom firmware to flash on your HTC flagship smartphone.

Packed full of features, TeamUB custom ROM has been updated to Android 5.1.1 now for the HTC One M8. The ROM includes OTA update so you won't have to flash new ROMs for upcoming Lollipop updates. Here are the steps and some prerequisites that you need to follow to update HTC One M8 to Android 5.1.1 TeamUB Lollipop.

TeamUB Android 5.1.1 features:

OTA updatesCentre clockBattery percent in the status barNetwork traffic indicatorDate settingsListview animationsAOKP System animationsLockscreen ShortcutsQuixk settings CustomizationHeads up notificationsProximity speakerPerformance settingsNetwork TrafficApp circle sidebarClock fontsBattery stylesWakelock blockerDSLV controllerStatusbar tickerApps to SDNav Bar heightStatus bar double tap to sleepCustom notification lightsRecent Panel settingsPrivacy optionsFluid interfaceBest battery improvementsAll latest CM commits

Prerequisites to update HTC One M8 to Android 5.1.1 TeamUB:

Backup any important datafrom your HTC One M8 as a complete wipe will be required during the flashing process.Install USB drivers for your HTC device. Check out this link.Enable USB debugging option on your device:Settings>DevelopmentOptions>USB debugging.Ensure that your HTC One M8's bootloader is unlocked and that you have a recovery tool like TWRP or CWM.Your device must be charged to at least 80% of power.

How to update HTC One M8 to Android 5.1.1 Lollipop:

Required files:

Download TeamUBAndroid 5.1.1 Lollipop custom ROMfor HTC One M8. Extract the boot.img file.Also download the GApps package for your device.

Here are the steps to help youupdate HTC One M8 to Android 5.1.1 basedTeamUBcustom firmware:

Connect your HTC Oneto your computer using a USB cable and copy the ROM and GApps zip filesto your phone’s SD card root folder.Copy / paste the boot.img file to the Android-sdk-windows\platform-toolsdirectory.Disconnect theUSBcord andpower off your HTC device.Boot your device in the Bootloader mode by pressing and holding theVolume DownandPowerkeys.Once in the Fastboot mode, navigate toandroid-sdk-windows\platform-toolsdirectory on your computer and open command prompt withShift + Right-clickcombo and click on theOpen Command Prompt.Type the following string into the window:fastboot flash boot boot.imgand press Enter.Fastboot reboot-press Enter again.Follow the onscreen instructions and selectBootloader> go toRecovery.Once in recovery, perform wipe data task: from CWM recovery menu, selectwipe data / factory resetand confirm the process.Also performwipe cache partitionfollowed bywipe dalvik cache(from Advanced).From recovery main menu, selectinstall zip from sdcardfollowed bychoose zip from sdcard.Locate the TeamUBAndroid 5.1.1 custom firmware file and confirm the flashing process.Once the ROM is flashed successfully, repeat the above step but select GApps package this time.Return back to main recovery menu and reboot your HTC One M8 into the new custom ROM. First boot takes a good 5 minutes so please be patient.

Enjoy the new ROM with fresh feelof Lollipop.