Help with Samsung S6 unable to find home network after updating to marshmallow.

I need your help, I downloaded marshmallow update for my samsung S6 but suddenly it cannot connect to my home wifi. It is able to find other wifi networks though, i tried to hard reset via menu (factory reset), and by pressing the volume key,power key and home key. My network doesnt appear in my phone at all!
I downloaded the update via prompt, but i am in europe. My wifes phone can use the internet at home so the modem everything should be fine

These are my phone details,
Samsung S6 SMG920F (Malaysian model)
Android version 6.0.1
Baseband Version G920FXXU3DPC2
Kernel version 3.10.61-7025264, dpi@SWDD6608#1,THU MAR 17 04:16:38 KST 2016
Build number MMB29K.G920FXXU3DPCI
SE for android status Enforcing, SEPF_SECMOBILE_6.0.1_0003 THU MAR 17 04:42:46 2016
Security Software version MDF V2.0 release 6 , VPN V1.4 Release 6.0
Knox version
Knox 2.6
Standard SDK 5.6.0
Premium SDK 2.6.0
Customization SDK 2.6.0
Container 2.6.0
C.E.P 2.0.1
Enterprise billing 1.2.0
OTP 2.6.0
SE for android 2.4.0
SSO 2.5.0
Shared devices 2.6.0
Tima 3.2.015
VPN 2.2.4

Android security patch level 1 April 2016

Please tell me what to do I am stuck with no wifi overseas, so I cant bring my phone for warranty.

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