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It’s that time of the year again when Google is bestowing its users with the power of upgrade. This time around, the new operating system version is called Nougat. Available for Nexus devices that support it, Nougat is also set to be made available for a variety of mobile device brands ranging from Motorola, Sony and Samsung to HTC, Huawei and LG. While some might appreciate the change, some Android users are likely to find the newest  OS unfitting for their device, whether we’re talking about technical issues or users preferring the old OS.

Some of the devices that can be found in the first category of users reporting technical difficulties  are the Nexus 6P as well as the 5X. For Android users that find themselves relating or just prefer the last OS, here is a guide on how you can take your Android 7.0 Nougat device and revert its software to Android 6.0.1 Marshmallow.

The process differs for each device brand as each of them require its own technique to flash to a fresh stock version of Marshmallow. While Nexus devices are able to use Fastboot  to flash factory images that come paired with each device, you will need other tools to get the job done on phones pertaining to other brands. Let’s take a quick look at what these tools are: For Samsung devices, you will require the Odin tool, while Motorola devices will need RSD Lite. HTC uses RUU’s that are one of a kind for each device, and then you have FlashTool, which is used for Sony and LG devices.

For Nexus devices, Google offers factory images that tend to the needs of all users, including the 6P and 5X users. The Nexus privilege kicks in as you can instantly get the factory image for your device and start the flashing process.

Getting Started

The first thing you will need to do is download the correct factory image for your device. Once that’s taken care of, extract the archive you’ve just downloaded and connect your device to your computer through a USB cable. Now it’s time to choose which method you will use for the actual flashing process.

For this you need to open the device in fastboot mode, which can be done through either the Adb tool or using the hardware key combination which requires you to shut your phone down, then press a key combination which is specific to your device. Most devices use the Power button and Volume Down key combination. Just hold the two keys down at the same time and your device should boot into fastboot mode. Depending on how old your device is, you might need to use a command called  fastboot oem unlock, and some devices could also require fastboot flashing unlock.

Next, you will have to go to the directory in your phone that contains the factory image you just downloaded and transferred over via USB. Once you find it, run the flash command, and it should get started on installing the firmware and OS on your device. It is recommended that post install, you reboot your device. To up the security even higher, you need to lock the device’s bootloader by starting your device in fastboot mode again and running fastboot flashing lock, or fastboot oem lock for older devices.