Help s4 9505 - problem wifi - very rare!!

Hello

I need your help.
Hey, I tried to investigate all information about problem WIFI.
But my case is very rare. My wifi doesn't working anymore .

I will explain my story about it.

My SPECS:
Samsung Galaxy S4 i9505 LTE
Base Band = I9505XXUEMJ5
Time = 2 years .
BEFORE Firmware = Android 4.3
AFTER Firmware = Android 5.0.1

**************************************
CHECK = *#1234#
AP: I9505XXUHOA7
CP: I9505XXUEMJ5
CSC: I95050XAH0A7


****************************************
Two days ago I was trying to update some latest version of app, As Whatsapp, Facebook, Messenger, youtube, y DI Radio. and play Marvel: Contest of Champions.
Later - The Wifi is OFF. or no work.

Yesterday.
1. Read all about problem wifi in many forums.
2. Test *#0011# and POWER SAVER OFF, WORK. but later 6 hours. WIFI NO WORK = FAIL
3. Download APP - Wifi Manager. WORK WIFI. but Later 6 hours. WIFI NO WORK = FAIL

Today
1. Install PhilZ Touch 6.58.7, - WORK :)
Use Odin 3.09
2. Install Android 5.0.1 Lollipop with wifi ---- see video https://www.youtube.com/watch?v=YN5RGpwSvDI
Firmware = XXUHA07-v1.1.zip
Lollipop 5.0.1 is Success and work perfect but NO WORK WIFI = FAIL
3. Finally, i got a another fix modem with wifi. --- I9505XXUGNK4_GSM_AND_LTE_MODEM.tar
Make odin and AP Flash it. "PASS"
So WIFI = NO WORK = FAIL

OMG ..., I see such problem is very complicated.
So i have bad luck with wifi. :eek::(:(:(

Please give me another alternative or suggestion to solve my wifi.
Otherwise I will throw the galaxy s4 to hell.... :(

Regards
Thank you