How to Install Official Firmware unbrick htc U11 Plus

Official Firmware for htc U11 Plus-
Official Stock ROM/ Firmware now available for htc U11 Plus, in this article You Will learn How to Flash Official ROM on htc U11 Plus,
This is a latest Official Stock ROM aka flash file for htc U11 Plus which is come in Ruu Format and Flashable with the fastboot mod, You can use it to fix bootloop to Repair System and in Development. The Premium HTC U11+ sports a 6-inch Quad HD+ Super LCD 18:9 display with a screen resolution of 1440x2880 pixels and also comes with Corning Gorilla Glass 5. Under the hood, the phone is powered by an octa-core Qualcomm Snapdragon 835 SoC clocked at 2.45GHz coupled with 6GB of RAM. The company says that the HTC U11+ will be available in 6GB with 128GB storage version only in Europe while rest of the markets will receive a 4GB RAM with 64GB storage version.
  • This ROM/Recovery is work on Listed Device only. Don’t try this on any other device.otherwise it cause bootloop,
  • Follow the steps correctly otherwise you may brick your device. We are not responsible for any damage to your phone.
  • It will erase all your data, so we advise you first to take a complete backup of your phone and then proceed.
  • Ensure that your phone has at least 50-60% charged to prevent the accidental shutdown in-between the process
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Method 1 –
  • Turn off your device.
  • Now boot your device into Download mode by Pressing the Power button and Volume down button.
  • Use the Volume rocker to navigate to the menu entry Reboot to bootloader and press Power button to confirm this action.
  • Use the Volume rocker to navigate to the menu entry Reboot to Recovery and press Power button to confirm this action. Your device will now reboot to recovery mode.
  • When recovery starts, you will see a red triangle with an exclamation mark within, wait for a short while and press both Volume buttons with Power button. This combination allows you to enter the Recovery menu.
  • Use the Volume rocker to navigate to apply update from phone storage option and press Power button to confirm.
  •  Now you can choose your OTA package and then press the Power button.
  • After reboot, you will get a message that you successfully updated your device.
Method 2 –
1) Enable ‘USB debugging’ option from setting>developer option>. To enable Developer Options, go to About phone and tap the Build Number 7 times.

2) Download ADB and fastboot driver for windows or ADB and Fastboot for Mac and install it on your PC.

3) Download the Oreo RUU zip for from above Copy ROM to a folder where adb installed.

4) Now Connect your phone to Laptop/PC and boot your Phone into Download mode by using below command  
adb reboot download
or use manual command to boot into Download Mode –
Power Off your phone.
Press and hold Power + Vol Down at the same time
In download mode, use the Vol Up and Vol Down buttons to navigate up and down and Power to confirm

5) Now Boot your device to RUUMode (Optional:- zips file can be flashed in download mode or RUUMode, both work) 
fastboot oem rebootRUU

6) Now flash the RUU ZIP file on HTC U11 with the command given below 
fastboot flash zip File_name.zip
fastboot reboot

7) Now wait until the process complete and then Reboot the phone.

8) Done!