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Root [MetroPCS] Back to stock

Um KDZ_FW_UPD doesn't work for me. I don't think it's your computer. It locks up Windows 7 even in compatability mode for Windows XP.

Use the modwin uptest. It's in the same zip. It works but stops responding when extracting the KDZ and when the DLL calls the function to start the upgrade. Run it as administrator.

You'll get a bootloop. Factory reset using volume down + home + power. Then you can boot.

It works trust me.

Got from kit kat to full stock this way. Got confused at the boot loop. But took a leap of faith with the factory reset. And it worked!

Also make sure you got drivers installed from the zip not the new ones. You gotta restart!

Running jellybean xperion w/ freedom kernel. Love it!

Hope this helps.

Don't use KDZ_FW_UPD!
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