[Q] Sprint HTC One (M7wls) 4.4.2 version

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Aug 6, 2013
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First thing First. INFO on Phone:
Sprint HTC One (M7wls) Rooted with Bad Boyz ROM installed. Custom recovery (I'm using TWRP 2.6.3.0) Updated to 4.4.2. Have Latest/Newest Radio installed. S-ON. Hboot- 1.56

Bootloader INFO:

*** TAMPERED ***
*** UNLOCKED ***
M7_WLS PVT SHIP S-ON RH
HBOOT-1.56.0000
OpenDSP-v32.120.274.0909
OS-4.06.651.4

My Question is: (I tried all method , neither of em worked or don't match my phone record.)
I want to unlocked my sprint htc one. I want to use my AT&T sim card. YES, my at&t sim card is activated and works. i tried sim unlocker app and android terminal emulator, neither work.ALSO and by the way YES my Sprint HTC one is CLEAN ESN.

asking for anyone help! thanks.