Any WIFI hangs in Saved, but it wont connect.

It's been 48 crazy hours since I'm having this annoying issue, and after Google even my soul and read the same amount of words as 180 bibles... I give up and write down what's happening to my Note 4.

I have an international Note 4 (N910F), with stock Android 5.0.1 (N910FXXU1ANK4), which was working 100% normal until 2 days ago where - just for curiosity - I installed Cyanogenmod 12.1 to see how it runs on my phone. After 30 or 40 minutes I returned to stock using the same stock Android 5.0.1 which I have previously downloaded from Sammobile.

Before install I did a clean full wipe, root again, and put it just like I did 48 hours ago. The only difference is now wifi scans for connections, it sees wifi connections, but it wont connect. I've flashed the whole firmware countless times, did a full wipe with TWRP and stock recoveries like 15 times, format partitions countless times, forgot connections, put details from scratch again and it just put them as Saved, but it wont connect. I tried to make a totally open connection and nothing... so I'm really out of ideas here.



Any suggestions? Any miraculous app? Please guys help me.

Thanks in advance.

King regards.

PD: FYI I'm the only one in my wifi channel.