Samsung A310F FRP RESET ERROR by Combination !

I went to reset FRP Samsung A310F, i try all files combination and with one phone power normal and enter adb mode. I reset FRP by Z3X process done ok after that i reset device and flash with stock rom, frp not removed phone also ask google account. By free method with sidesync i can enter up to build number but when i tap 7 times to unlock developer menu nothing happend, anyway to unlock frp on this phone ?
Operation: Reset FRP
Selected model: SM-A310F
Software version: 27.0
You must activate ADB before reset FRP Yes
Goto 'Terms and conditions' press 'NEXT' and 'AGREE' EULA Yes
Waiting ADB device... ok
Reading phone info...
Model: SM-A310F
Android version: 5.1.1
Product code: SM-A310FZDDSER
Phone version: A310FXXU2APC1
PDA version: FA51_A310FXXU2APF1
CSC version:
CSC country code:
CSC sales code:
HW version: MP 0.200
Phone SN: R28H31HMYLE
Chip name: EXYNOS7580
Modem board: SHANNON310
RF cal date: 20160311
IMEI:
Bypass FRP... ok
For complete reset FRP, goto 'Backup and reset' and make 'Factory data reset'
Done with Samsung Tool PRO v.27.0