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For refference lang parang wala pa kasi naka post dito para meron tayo guide
Samsung S5 SM_G900A Lock From AT&T
TOOLS NEEDED:
1. Micro usb cable
2. z3x box
PROCEDURE:
1. Root muna kung paano? pasok Dito
2. Kapag root na punta na tayo sa unlocking using Z3x box
3. dial *#0808# and choose DM+MODEM+ADB and insert usb cable and install driver
4. Back up muna para walang aberya Open Z3x and fallow screenshot


5. After back up go na tayo sa unlock just fallow screenshot


For certificate file use this Certificate G900F
Note: mababago ang imei ng unit kaya explain muna sa customer bago gawin
After ng write certificate your done




Samsung S5 SM_G900A Lock From AT&T
TOOLS NEEDED:
1. Micro usb cable
2. z3x box
PROCEDURE:
1. Root muna kung paano? pasok Dito
2. Kapag root na punta na tayo sa unlocking using Z3x box
3. dial *#0808# and choose DM+MODEM+ADB and insert usb cable and install driver
4. Back up muna para walang aberya Open Z3x and fallow screenshot


5. After back up go na tayo sa unlock just fallow screenshot


For certificate file use this Certificate G900F
Note: mababago ang imei ng unit kaya explain muna sa customer bago gawin
After ng write certificate your done



