Android Marshmallow has turned out a little troublemaker for some users, some facing very serious issues. Even though some problems are common and easy to resolve, if none works for you, here are some last bit of measures to help you out.
Just to beware you, proceed with these only if you have no alternative and have tried every possible tweak for your particular problem.
Here we go :
1. Clear cache partition :
You can try clearing your device’s cache partition and jump start the installation to fix your problem. This varies from device to device, sometimes. To do this on Nexus 6P :
• Press and hold Power and Volume Down buttons simultaneously for around 10 seconds.
• You should see a large arrow at the top of the screen.
• Tap Volume Down repeatedly until you see Recovery in the arrow. Then tap the Power button.
• You should see an android on his back with its chest open showing red triangle and exclamation mark.
• While holding the Power button, tap Volume Up once then release the Power button.
• You should now see a list of items at top of screen.
• Tap Volume Down until the item to erase or wipe the cache partition is highlighted. Then tap Power button to initiate the process.
• A status messages will appear at the bottom of the screen.
2. Factory Reset :
Make sure you back up all your files and data before proceeding with this. To do this, you need to consult your device’s manual/guide/website. Google has put up very helpful guides for all the Nexus devices on how to factory reset them here.
3. Downgrade Device :
If going back to licky Lollipop is what you desire, you can download the OS for your device and easily perform a set of actions. But this is totally off the books as your manufacturer may not recommend this. Still, let me know in comments and I’ll mail you an extensive guide along with all download links on how to downgrade your device. 😉
4. Checkout forums for individual problems :
If you’re experiencing a particular problem, a specific, not so common one, I recommend checking out the forums for your device.
Nexus users can see Google’s Nexus Help Forum.
XDA Developers and Android Central may be having users similar to you facing same problem as yours (a solution maybe listed too). See if you can if anything to calm down your anger.
5. Contact Google :
Talk to them about it, your device, complain, request a solution, send your device to them. They might give you a replacement device! They just might!
After all of this I am sure you must be pretty disappointed and angry, so much that even this winter can’t calm you down. Still, when you’re done hurling your abuses, I would love to help you out, YourTechSage!