Reddit Verizon released the official Android 5. So, what to do if you want to restore official Android OS on your phone? How does the RUU work? Well, in a few words, the RUU represents a form of stock Android OS that is customized and optimized for the manual update operation.
Moreover, this RUU comes with the latest and official Android 5. Why, should you complete this tutorial? As I have already pointed out, this is in fact a manual update procedure. So, if you cannot receive the OTA notification, or if you have to downgrade back to stock for resolving software related issues, for revoking root access or for removing a custom ROM firmware, you have to use a compatible RUU, just like the one offered below. As you can see, this step by step guide might become extremely useful, so a good idea will be to bookmark this page.
Therefore, this tutorial is official — and we will keep it all official. So, you can safely update your phone without using third party tools and other risky and complex procedures. Good; now for being able to safely apply the guidelines from below, you will first have to ensure that a computer can be used. On the computer you should temporarily deactivate the antivirus, and other similar programs, protection as these programs might interfere with the update process.
You might want to backup your data before updating or downgrading to stock Lollipop OS. The backup will imply in using compatible apps and tools for saving your personal data, info and accounts. In this way you can be sure that nothing bad happens with your data while you complete the update operation. In that matter you should at least try to save your contacts list, call logs, texts, market apps, images, internet settings, videos, audio files and so on.
How to Install Stock Android 5. If you do, then format it to FAT Now, download the RUU file from this page and the vzwm8Lhboot. Rename the downloaded vzwm8Lhboot. Now, the file will be automatically recognized by your HTC One; thus the installation procedure will be prompted on your device. So, just follow on screen prompts and complete the installation process.
Put your One M8 into bootloader mode once again. Connect your smartphone with your computer by plugging in the USB cord. Follow on screen prompts and resume the update operation. Do share your experience with us and tell us how things worked for you by using the comments field from below.