Users wanting to try Android 6.0 Marshmallow on the HTC One M9 can install CM13 Nightly custom ROM in order to do exactly so. HTC hasn’t yet released an official update for it’s premiere flagship phone but you can try out Marshmallow nonetheless by installing CM13 Nightly custom ROM. CyanogenMod is a renowned name in the ROM business, especially with HTC. Developers at CM have supported a large number of HTC devices in each of their releases. Logically, they have enhanced support of CM13 Nightly Android 6.0 Marshmallow to HTC One M9. Once you get to install it, you would notice that CM13 Nightly relies on the stock UI of Android that you see on Nexus devices along with customization options that can’t be numbered. CM13 hasn’t reached final stages yet which is why it is still a Nightly — new builds with code enhancements compiled each day. You can update One to CM13 Nightly Android 6.0 Marshmallow custom firmware using the tutorial below. This is not an official release by HTC, but just a custom ROM which would require a custom recovery like ClockworkMod or TWRP in order to flash the ROM zip and Google Apps zip files on your phone. Make sure your HTC One bootloader is unlocked or you won’t be able to install custom ROMs.

As you continue reading, we will tell you how to install CM13 Nightly Android 6.0 Marshmallow custom ROM on HTC One M9. All the step-by-step instructions are given below, and we have also given a few extra tips that you have to keep in mind before proceeding. Make sure you backup all your existing data in the phone before proceeding as this tutorial will wipe out all your internal storage data. The following tips are important as they will help the installation procedure to go smooth without any issues. Let’s get to the tutorial now.

 

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Disclaimer: All the custom ROMs and firmwares, official software updates, tools, mods or anything mentioned in the tutorial belong to their respective owners/developers. We (TeamAndroid.com) or the developers are not to be held responsible if you damage or brick your device. We don’t have you on gun point to try out this tutorial 😉

CM13 Nightly Android 6.0 Marshmallow ROM Details:

NOTE: Since this is not a final build, make sure you know that after installing this firmware update, your Android device can get FC errors, boot loops, several other bugs, apps might not work or worse, your phone might not boot. To fix, you will have to reinstall stock firmware or any other stable custom ROM.

Remember, this is not an official firmware update. This is a custom ROM, based on AOSP release of the Android 6.0 Marshmallow.

There are tons of useful articles and how-to guides on Team Android for the HTC One M9, but we think you might be interested in the following posts:

Like this CM13 Nightly ROM based on the latest Android 6.0? We love it too and we know you are looking forward to install it on your phone now. Now please read below for important tips on how to make sure your installation goes smooth and you do not end up with any problems.

HTC One USB Drivers

You will need to connect your Android phone with the computer. For that, please make sure you have installed the USB drivers for HTC One M9 properly. If not, you can download the latest official drivers from our Android USB Drivers section here:

Download HTC One M9 USB drivers!

Backup and Other Important Tips

Done with the USB drivers? Perfect. The tutorial is on the next page, but first, please take a look at the following tips and important points you need to take care of. These are important, as we don’t want anyone losing their personal data or apps:

Always backup your important data that you might need after you install a new custom ROM, an official software update or anything else. Make a backup for just in case, you never know when anything might go wrong. See below for some tips on how to backup data:

Samsung users can also back up data using Samsung KIES. If you backup data manually, you get more options what to choose from and it is very easy to move data across Android devices from different manufacturers, i.e moving Samsung Galaxy Note backup data to HTC One M9.

If you already have a custom recovery (ClockworkMod, TWRP etc.) installed on your phone, we strongly recommend a backup using that as it creates a complete image of your existing phone set up.

A few more optional tips that you should remember:

1. Having problems connecting your Android phone to the computer? You need to enable USB debugging mode. See here: How to Enable USB Debugging — for Gingerbread, Ice Cream Sandwich and Jelly Bean.

2. Make sure your Android device is charged up to 80-85% battery level. This might help you: How to Check Battery Percentage. Why? Because, if your phone goes off suddenly while installing a custom ROM, flashing an official firmware update or installing mods etc. — your phone might get bricked or go dead permanently. No one wants that, right?

4. Most of the tutorials and how-to guides on Team Android are for factory unlocked Android phones and tablets. We recommend NOT to try our guides if your phone is locked to a carrier, unless we have specified the carrier name or device model.

If you find the above tips useful and they were helpful to you, please consider giving us a +1 or LIKE to thank us!

All set and ready? Good. Now, let’s proceed with the tutorial on the next page and update One to CM13 Nightly Android 6.0 Marshmallow custom firmware.

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