Samsung Galaxy S6 is an awesome smartphone with many features, but if you want to add new features, enhance performance, try out custom ROMs like CyanogenMod, customize with Xposed Framework or install certain apps, you need to have root access and custom recovery like TWRP or CWM on Galaxy S6; however, you will lose manufacturer’s warranty.
HTC One Max (Global GSM/Verizon/Sprint) users can now update their phone to Android 5.1 Lollipop via CyanogenMod 12.1 custom ROM. HTC will not release Android 5.1 Lollipop update for One Max anytime soon, however users who are impatiently waiting for the new Lollipop OS can enjoy Android 5.1 Lollipop right now by installing CyanogenMod 12.1 Nightly.
Android 5.1 Lollipop update for Moto X 2013 might not see an official release very soon. However, if you cannot wait for the official update, an official CyanogenMod 12.1 ROM running on the latest Android 5.1 is now available for Moto X 2013. Rooted, bootloader unlocked Moto X 2013 users can enjoy Android 5.1 by installing CyanogenMod 12.1 Nightly(ghost)
Google has rolled out Android 5.1 Lollipop OTA (over the air) update for Nexus 4. This new update will improve the stability and performance of the Nexus 4 and fixes many bugs that found in the previous build. Also, the new update bring new features like enhanced device theft protection and Wi-Fi and Bluetooth connections from the Quick Settings panel to Nexus 4.
Following the release of the latest Android 5.1 Lollipop, developer communities are busy building Android 5.1 based custom ROM for various phones including the HTC One M8. An unofficial build of CyanogenMod 12.1 custom ROM for HTC One M8 is now available that you can install via a custom recovery and enjoy Android 5.1 features plus CyanogenMod features on HTC One M8.
There are various reasons for you to reinstall stock firmware on your Micromax Yu Yureka. For example, if you ran into problems like bootloop when tweaking your phone after rooting it, or after using few custom ROMs and you feel nostalgic about the stock firmware and its features, etc. Whatever the reasons will be, you can easily reinstall official firmware on Micromax Yu Yureka.