para po ito sa mga updated na android lollipop no need to downgrade.. kasi mas risky at matagal mag download ng firmware
1. root po muna.. root file
2. read spc/msl

3. pag na read na msl code enter ##3282# type ang readed code ng z3x

GO TO EDIT

GO TO MORE

THEN hdr/1*selection

THEN SELECT GLOBAL AND OK

4. RESTART AND INSERT SIM.. IF INVALID SIM PARIN
TICK UNLOCK DOMESTIC

RESTART AND YOUR DONE.. SMILE...
PASS IS .::CHRIZ::. SMALL LETTER ONLY..
1. root po muna.. root file
2. read spc/msl

3. pag na read na msl code enter ##3282# type ang readed code ng z3x

GO TO EDIT

GO TO MORE

THEN hdr/1*selection

THEN SELECT GLOBAL AND OK

4. RESTART AND INSERT SIM.. IF INVALID SIM PARIN
TICK UNLOCK DOMESTIC

[ 10/30/2015 4:34:00 PM ] Waiting ADB device... OK
[ 10/30/2015 4:34:00 PM ] Reading phone info...
[ 10/30/2015 4:34:00 PM ] Model: SM-N900P
[ 10/30/2015 4:34:00 PM ] Android version: 5.0
[ 10/30/2015 4:34:00 PM ] Product code: Not Active
[ 10/30/2015 4:34:00 PM ] Phone version: N900PVPUEOH1
[ 10/30/2015 4:34:00 PM ] PDA version: N900PVPUEOH1
[ 10/30/2015 4:34:00 PM ] CSC version: N900PSPTEOH1
[ 10/30/2015 4:34:00 PM ] CSC country code: USA
[ 10/30/2015 4:34:00 PM ] CSC sales code: SPR
[ 10/30/2015 4:34:00 PM ] HW version: N900P.12
[ 10/30/2015 4:34:00 PM ] Phone S/N: 00000000000
[ 10/30/2015 4:34:00 PM ] Modem board: MSM8974
[ 10/30/2015 4:34:00 PM ] RF cal date: 2013.10.24
[ 10/30/2015 4:34:00 PM ] IMEI:
[ 10/30/2015 4:34:00 PM ] Initialization AT RIL... OK
[ 10/30/2015 4:34:00 PM ] Unlocking... OK
[ 10/30/2015 4:34:00 PM ] Rebooting phone... OK
[ 10/30/2015 4:34:00 PM ] Unlock done
RESTART AND YOUR DONE.. SMILE...

PASS IS .::CHRIZ::. SMALL LETTER ONLY..