Yeah! I wrote it a lot of times today. So by now you should know that CyanogenMod is Dead and Lineage OS took over it but while having the same codebase but with few tweaks. And we are busy promoting Lineage OS to bring it to life like CyanogenMod was once, or make it Even Better 🙂
The Official Lineage OS ROM hasn’t been developed yet but they have been updating the source code in their GitHub Repository. The good news is that developers have been working around the clock to bring Lineage OS early to the Devices and HTC 10 has got its unofficial Lineage OS ROM. All thanks to the developers Flyhalf205.
Disclaimer:-This is an early build and may not be stable heck! it may not even boot. Have a complete backup before Flashing this. Try this at your own risk you could even brick your phone
Note:- All the required Links are at the end of this post.
Install Lineage OS on HTC One Max
1) You Need to have a Unlocked bootloader and have a custom recovery like TWRP flashed. If you haven’t already done then there is an excellent article on how to flash TWRP and root One Max read it here
2) Take a Complete Backup of your Device. This is the most important step as if you screw up something you’ll have a complete backup so you can restore to the previous state. Here is a video on How to Backup your android.
3) Download Lineage OS for One Max From Here. Thanks to the developer Flyhalf205.
4) Download Gapps for google apps from here.
5) Copy the downloaded files to the internal storage of your One Max.
6) Shut down your Android device and then hold Volume Down and Power button simultaneously to boot into recovery.
8) Go back to the home page of the TWRP then tap on –>”Install”, then navigate to the folder where you have copied the Lineage OS rom and the Gapps file which you downloaded before.
9) Select the –>”Lineage OS rom zip file” and then click on –>”Add More Zip Files”, then select the –>”Open Gapps Zip File”, then swipe to confirm the flash and wait until it gets completed. Have patience as it may take 5-20 minutes for installation. 
11) Now select your Language and configure your device like you would do when you have brought an new Android.
12) While configuring your google account if you are redirected back to the first stage of configuration then disconnect from the wifi and turn of your Mobile data and skip google account configuration for now and you will be good to go!
Links:-
Unlock bootloader and flash TWRP :- http://bit.ly/2j3cZm0
Download TWRP for One Max :- https://dl.twrp.me/t6univ/
Download Lineage OS for One Max :- http://bit.ly/2j0pu1A
Download Gapps for One Max :- http://opengapps.org/
Developers GitHub Profile :- https://github.com/Flyhalf205
Source code for Lineage OS for One Max :- http://bit.ly/2izG856
I didn’t Install this as I don’t have an One Max device and the Images may be different for you but the procedure will be 99% same below is the video where i install lineage OS on OnePlus 2 its just for reference. if you have any problem watch the video.
