[GUIDE][SAMSUNG] HOW TO PERMANENTLY FIX THE Wi-Fi PROBLEM topic

HOW TO PERMANENTLY FIX THE Wi-Fi PROBLEM OF YOUR SAMSUNG DEVICE

- DESCRIPTION -

This is a GUIDE on how to repair the Wi-Fi problem characterized by not having the ability to TURN ON the Wi-Fi after flashing:
1. A new firmware;
2. A new custom rom;
3. Anything else that may interfere with the /system folder of your device.

- WARNING -

This tutorial is based on the I9505 phone, but if you have this problem on another Samsung device you just need to find the specified BOOTLOADER and MODEM related to YOUR MODEL.

- YOUTUBE VIDEO -

To understand the whole process completely I have made an YouTube video, because I think it's a better way of understanding what you should or shoudn't do. Video is recorded at 1080p @60fps so it will take longer to process on YouTube, be patient, it will be worth waiting.

- EXPLANATIONS -

THERE ARE 3 THINGS OVERALL THAT YOU SHOULD DO IN ORDER TO FIX THE PROBLEM:

1 - UPDATE THE BOOTLOADER - YOU CAN ONLY FLASH A BOOTLOADER THAT IS ONLY BUILT FOR YOUR DEVICE = S4 USES A BOOTLOADER, S5 ANOTHER BOOTLOADER AND SO ON;
2 - UPDATING THE MODEM - YOU CAN ONLY FLASH A MODEM THAT IS ONLY BUILT FOR YOUR DEVICE = S4 USES A MODEM, S5 ANOTHER MODEM AND SO ON;
3 - ONLY FOR ROOTED I9505 - YOU CAN ONLY FLASH THIS FILE ONLY IF YOU ARE RUNNING 4.4.2 OFFICIAL TW ON I9505. NO OTHER EXCEPTIONS.
Neccesary step - You need to edit the build.prop file of your phone with an app like Root Explorer, situated in /system folder and find the line containing ro.securestorage.support=true and change it to false then save the file.

- DOWNLOADS - WARNING! - I9505 FILES ONLY -

DROPBOX FOLDER WITH ALL THE FILES YOU WILL NEED