TUTORIAL: How to Install Android 7.1.1 CypherOS Nougat on HTC One M8
We have put together a detailed step-by-step instructions guide on how to install Android 7.1.1 CypherOS Nougat custom firmware on HTC One M8. If you are used to installing custom ROMs on your One M8, then this should not be any different for you.
As we mentioned earlier, you need to have a custom recovery installed on your phone. Please do that first and then get back to this tutorial. And before you proceed below, make sure you read the tutorial once before actually performing it on your Android device.
- This tutorial is only for installing Android 7.1.1 CypherOS ROM on HTC One M8. Please do not try on any other One M8 variants.
- Your phone should have a custom recovery installed in order to install this CypherOS ROM on your phone.
- We will be using TWRP Recovery for this tutorial. [How to Install TWRP Recovery on HTC One M8]
- Bootloader should be unlocked. [How to Unlock Bootloader of HTC Phones]
- This tutorial will wipe out all your data. Make sure you backup all your data in your phone before proceeding.
- Perform a Dalvik Cache wipe before proceeding from the Recovery Mode.
Complete Step-By-Step Instructions:
NOTE: Make sure ADB and Fastboot is configured on your PC. How? See here: How to Set Up ADB and Fastboot with Android SDK.
Step 1 – Download Android 7.1.1 CypherOS ROM for One M8 to your computer and extract boot.img from the zip file separately.
Step 2 – Connect and mount your One M8 USB memory to your computer using the USB cable.
Step 3 – Now copy/paste the downloaded Android 7.1.1 ROM zip file to your phone memory / SD card. Make sure the file is in the phone memory / SD card root (not in any folder).
Step 4 – Copy/paste the boot.img file to android-sdk-windows\platform-tools directory.
Step 5 – Then turn OFF your phone and disconnect from the USB cable.
Step 6 – Now to get in the Bootloader/Fastboot Mode. Turn ON the phone while pressing and holding the Volume Down + Power buttons.
Step 7 – Once in the Fastboot mode (on your phone), navigate to android-sdk-windows\platform-tools directory (on your computer) and open Command Prompt (Shift + Right-click > Open Command Prompt).
Step 8 – Type the following command and press Enter.
fastboot flash boot boot.img
Step 9 – Then, type the following command and press Enter.
Step 10 – Follow the navigation instructions on the screen. Select BOOTLOADER and then go to RECOVERY. Alternatively, read this: How to Enter Recovery Mode on Any Android Phone.
NOTE: Screenshots of the Team Win Recovery Project (TWRP Recovery) may change as new versions are released.
Step 11 – Once you are in TWRP Recovery, perform a full data wipe by tapping on the ‘Wipe’ button. Then swipe on the “Swipe to Factory Reset” option at the bottom.
Step 13 – Confirm installation on the next screen by swiping on the “Swipe to Confirm Flash” option. The installation procedure should start now as show below.
Step 16 – You can now reboot your phone by selecting the “Reboot System” button.
Your HTC One M8 will boot now and it might take about 5 minutes to boot on your first time after flashing a new ROM. So, please wait.
That’s it! Your HTC One M8 should now have Android 7.1.1 CypherOS Nougat custom ROM installed on your phone! Go to Settings > About phone to verify.
If you run into any problems, feel free to drop us a comment below and we will reply you back ASAP with the fix or the solution to your problem.