Myself and many other people in the note 3 forums have encountered a boot looping issue and the solution has not been documented on the T-Mobile forums. It seems to be a problem with the EFS filesystem getting corrupted for various reasons (kernel flash, twrp restore, etc).
Below is a link to the fix from the 9005N forum. It wipes the EFS partition so it can be rebuilt uncorrupted. It does not affect any data, etc.
I take no credit for the fix and am simply reposting so T-Mobile users can find it easily.
yeah I have heard the twrp causes an error with restores. I have personally encountered it when flashing a new kernel and sometimes even change kernel settings and rebooting. seems to be a little different for everyone but almost always the same issue/fix in the end.
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