Can't connect with wifi 2.4 ghz

[Gravenor]

After updte my m4 to marshmallow,i can't connect with any wifi 2.4 ghz
I only can see wifi 5ghz

I tried to find advanced wifi options but its missing

Thanks

[Uliwooly]

@Gravenor

Could you test a different router?

[Gravenor]

Yes, i try with three different routers

[Uliwooly]

@Gravenor

That's odd, even while in >>> safe mode

[Gravenor]

Tested in safe mode and the same. I only can see 5 ghz wifi networks

[Uliwooly]

@Gravenor'

That's quite odd, you could repair the phone with XC and report back.

Xperia Companion (XC)

Software Repair Guide

Alternatives on How to backup Xperias

http://talk.sonymobile.com/thread/36355