For those that want to get official 4.4.2 tw on there metro pcs m919n Here's how to. This is easy and works and safe. FIRST : Note that you will loose your stock metro 4.3 shipped firmware for good for the following reason. Your updating to a 4.4.2 firmware which will not allow you to downgrade with Odin to 4.3 anymore cause the bootloader updates SECONDLY : The reason being is because it's a official Tmobile 4.4.2 ota. You'll be stuck with there version of firmware which is everything you'd get with metros 4.4.2 Besides there bloat ware you swap for tmobile bloat. No harm with this Install cause most of us already know we can flash tmobile 4.3 roms.. All day as long as your metro s4 is on 4.3 firmware There's no difference in anything else these are Nearly same phones same roms. Just one labeled as Metro one tmobile. The How to part: Yes you can safely flash M919 tmobile s4 tar over your metro s4. Flash stock UVUEMK2 4.3 on your s4. This will make it officially a tmobile s4. Your still on Metro service with tmobile data cause we use tmobile towers. Wifi calling stays there same Everything does in fact . You'll Loose The Option To Make It A Metro S4 For now Based On lack of a Metro 4.4.2 offical FIRMWARE availability . NOTE: YOU WILL be able to get back on Metro firmware Via Odin once metro releases 4.4.2 and there's an available tar file. For now Download and flash m919 UVUEMK2 on your s4. Then it's stock at that point No root. Then Go to system about updates Via wifi and you'll see the ota 379mb.. file to Update to 4.4.2 Kitkat. Once rebooted your on Tmobile 4.4.2 on Metro s4. Features : Album art on locks screen for pandora and music Cam shortcut The.. Ui color is different a bit. and a few others.. As well as Faster charging and better battery RE-ROOT with Cf auto m919 Note: As of now Custom recovery is broken @ Unavailable. There may be one Soon You'd have to check around on xda and Google . I know Philz cwm works with tmobile Note 3 it also May be available for the m919 which would work for m919n. Best of luck.