Verizon Note 3 Wifi Problem (Greyed Out) topic

I have Verizon Galaxy Note 3, and my problem is that Wifi button is greyed out and simply wouldnt turn on.

I have done a lot of homework so far, and before, I had 4.3 Jelly Bean, and Wifi being greyed out started around 2 weeks ago (early Dec/2014 - until then, it worked fine).

So I updated to 4.4.2 Kitkat thinking software issue, but wifi is still not working.

I had already searched for hours, and did many things to try to isolate the problem.

*I tried Safe mode
*Reset Cache/Factory several times
*Battery in-n-out, SD card in-n-out, any external peripherals i had alrdy taken everything off and tried
*Tried Alliance/Jasmine/Eclipse ROMs, but still same
*Not router issue @ home since Phone Wifi simply wouldn' turn on

I thought of downgrading back to 4.3 Jelly Bean, but there were many articles saying I can not downgrade, so I think it's out of option.

I now think it's hardware issue, but can not confirm... went to Verizon store too, and the guy just feels it's more software by 51/49, but the ultimate problem is that I just can not 100% ID what the exact problem is - software or hardware.

I really don't want to spend $ for another phone... I also feel it is Kitkat since I also found many articles with Note 3 Kitkat wifi problem, and I read a lot of them, but couldn't really find any solution to my specific issue.

My understanding is that I have 2 options - wait for proper fix by Dev/Samsung for Kitkat firmware or get a new phone

I really did everything I can within my power, and making this post is my last resort...

Hope I can shed some light from experts or anyone who knows any more beneficial details so that @ least i can try to sort my options and situation more clearly...

Thanks much in advance!