Upgrade Firmware

• Interface: This includes animations control.Clock and weather widgets are completely customizable so you don't need to download any separate app for both clock and weather widgets.
• Lock screen: You can customize weather widget on lock screen and double tapping on lock screen ring will put the device to sleep.
• Gesture anywhere: this feature is now quite common in most of the roms.Its a great way of navigation through gestures.
  
•  App circle bar:  You can access this by swiping from left or right edge of the screen and a tab appears with apps in it.You can launch your favourite apps easily with this feature and of course you can disable it if you don't like.Keep in mind that it wont open apps in floating mode.
• Notification lights: If your device supports notification led light then you can customize it.You can change the color of your led light for different actions.
• Traffic indicator is also present in this rom for on ongoing upload and download speeds which is displayed on your status bar.
  
• Double tapping on status bar will put the device to sleep.
• Brightness control: You can easily adjust screen brightness by just swiping on status bar.
• Status bar: Carrie label can be displayed on status bar and you can customize it too.Battery icon can also be changed if you don't like it.
• Ad blocker is present in this rom by default and it takes care of ads showing up in your browser or apps.
• Heads up: When ever you receive a notification a rectangular bar with notification info will be displayed on top portion of the screen giving you a glimpse of what notification you have received this is called heads up notification and is common in android lollipop.You can adjust time for heads up to be displayed.
• Layers: This is an alternative to cyanogenmod theme engine and you can customize ui using themes.
• Performance control:  This lets you to control your cpu behaviour.You can play with frequencies,schedulers,governors etc.So you don't need to go for any other cpu control apps.
• and lot more features............

• Download and install htc drivers i.e sync on your computer if you don't have.
• Now power off the device completely and wait for few seconds to confirm that it is completely off.
• Hold volume down and power button at same time for few seconds.When you see hboot release buttons.Using volume down for navigation select "fastboot" and click on power button to put one m8 into fastboot.
• Once you are in fastboot mode connect it to computer through usb cable and if you notice any driver installation process let it complete first.
• Download  fastboot on our laptop or Pc and install it.You can install it any location but choose location as c: which is default location.
• open the fastboot folder which is located in "c:\programming files".Right click on empty space by holding shift and you see an option "open cmd here".
• If you don't find this option then press windows and R buttons at same time ,Run pops up and type cmd to open command prompt.
• Now go to fastboot folder and copy the location of it which you can see in address bar of folder.
• In command prompt type the command "Cd location of fastboot folder" and press enter.You will notice that fastboot appears in command line.To paste location right click on empty space in cmd and several pops up.Select paste.
• One you press enter you have to notice minimal adb and fastboot in command line instead of c or some thing.
• Once you are in fastboot window type "fastboot devices" and press enter.If your device is detected you will get a serial number in list of  devices attached.If not uninstall drivers and install them again.
• Now type the command "fastboot oem get_identifier_token" and hit enter.You will get a serial key.Copy that key to notepad or ms-word.
• Now open htcdev.com and register with a valid email id.
• One you sign up there.Log in to your account and you will find developer centre in top most part.
• Click on it and you will have three more options to choose from.select unlock bootloader.
  
• Proceed all other steps as mentioned and you are are asked to submit Submit your key there.
• You will receive a mail from Htc which includes a unlock_code.bin file. Download it and move it to fastboot folder which is located in programming files.
• Now type the command "fastboot flash unlock code unlock_code.bin" and hit enter.Check your device ,you will notice a notification on htc one m8 to confirm unlocking bootloader. Click on yes.This will unlock bootloder and also erases all data of your Htc one m8.
• You have a unlocked bootloader device which is ready to accept a recovery to be flashed.

#2: Install Twrp recovery on Htc One m8 using fastboot

• Now download twrp recovery for htc one m8 above link and paste it in fastboot folder.Don't forget to rename it to recovery or to twrp so that you can type it easily in command.
• Put the device in fastboot mode again using button combinations.See it in step 1 if you don't know.
• Type the command "fastboot flash recovery recovery.img".This will install latest twrp recovery on your htc one m8 .
• Once you have installed recovery reboot it and copy liquid smooth which you have downloaded on your computer to One m8 internal storage and head over to next step.

1. Download liquid smooth  for  Verizon htc one m8 for your model only and Gapps transfer it to sdcard or internal storage of your device.
2. Power of  device completely and wait for few seconds to confirm that it is off completely.
3. Hold volume down and power button at same time for few seconds.
4. When you see hboot release buttons.Using volume keys for navigation select recovery and click on power button to reboot into twrp recovery.
5. Once you are in  twrp click on  backup and select all partitions which you want to backup. It might take about 5 minutes for backup to complete. Don't interrupt backup process.This step is essential if flashing is your first time.
6. Once backup of your existing rom is completed click on back button.Wipe data,cache and dalvik cache and wipe system partition too.
7. Now select Install and navigate to location where you have placed your liquid smooth rom and gapps zip files.
8. Flashing this might take about 5 minutes or even less.Once flashing is complete do a factory reset again.
9. Now reboot to system.