How to Update to Marshmallow for Metro PCS LG G Stylo Users This is my first tutorial so please bear with me. I also hold no responsibility if your phone blows up, electrocutes you, or reaches sentience and tries to rule the world. In other words, DO THIS AT YOUR OWN RISK!!! I would like to give a warm thank you to: @TMacgnolia @DrakenFX quangnhut123 @ xdadevelopers @Blu8 and a very special thank you to @RonnieMatson for his patience and assistance in helping me acheive updating my own phone to MM. If anyone was forgotten, please let me know! Requirements: LG G STYLO on Stock, No Root To return to stock from root use this: http://androidforums.com/threads/rom-lg-g-stylo-h631-ms631-v10j-stock-restore.949196/ LG Flash Tool 2014 and LG Drivers http://forum.xda-developers.com/showthread.php?t=2797190 Tmobile H63110i_00.kdz found here:http://androidforums.com/threads/re...s-kdz-for-t-mobile-metro-fido-for-now.927867/ NOTE!!! Do Not use the Metro .kdz!!! PC with internet connection And (obviously) a usb data transfer cable Now that we have everything we need, let's move on! ON PC END 1: Extract the LG Flash Tool 2014.zip to your PC desktop. 2: Move the 10i.kdz to the LG Flash Tool 2014 Folder. ( The .kdz must be in the same folder as the LG Flash Tool 2014 .exe!!!) 3: Install the LG Drivers to your PC ON PHONE END 1: Enable Developer Options (Settings, About Phone, Tap Build Number 5 times) 2: In Developer options, make sure USB Debugging and OEM Unlock are checked 3: Power off phone for 10 seconds 4: Put phone in Download Mode ( When phone is powered off, hold volume up and plug in usb data tranfer cable from PC to phone ON PC END 1: Run LG Flash Tool 2014 as administrator 2: Select Type: CDMA, PhoneMode: DIAG, Reset time: 33000, Select KDZ file: H63110i_00.kdz 3: Hit CSE Flash 4: Hit Start 5: A Select Country and Language window will pop up 6: Select Different under Country and English under Language 7: Hit OK and the flashing process will start NOTE!!! you will receive an error about not being able to connect to the server on your PC. THIS IS NORMAL!!! Ignore this error and wait for your phone to finish flashing. If all is going well, COM and a Number should appear on your phone during the flashing process. DO NOT UNPLUG YOUR PHONE FROM PC UNTIL FLASH IS COMPLETED!!! Once your phone is finished flashing, it will restart. You will now be on H63110i. ON PHONE END 1: Go to Settings, Backup and Reset, Factory Reset THIS WILL DELETE ALL YOUR DATA FROM INTERNAL STORAGE SO BACKUP TO SD IF IMPORTANT! 2: Your phone will restart twice. Once finished, Set up your phone as a new device. 3: Enable Developer Options, and make sure OEM Unlock and USB Debugging are checked. 4: Go to Settings, Date & Time, and uncheck Auto-date & time. 5: Manually set your phones time to 11:30 PM 6: Connect phone to Wifi 7: Go to Settings, About Phone, Update Center System updates. 8: Your phone should now download approx. a 60MB update and restart. Let the update finish and your phone will restart. 9: you are now on H63110j 10: Repeat steps 6-8 2 more times. you will receive approx a 147MB update to H63110l and a final approx 767MB update to H63120b which is Marshmallow! Enjoy the fruits and flavour of your labour!!! FINAL NOTE: If anything in this tutorial was redundant, incomprehensible, or unnecessary please inform me and I will do my best to correct it.