D855 stock MM: about wifi 2.4GHz channel range

[themissionimpossible]

I have an international unbranded D855 just flashed with stock European MM kdz, unrooted.
After flashing I wasn't able to see my wireless router, the G3 didn't even show my 2.4GHz wireless network SSID in the network list!!!

Any other device in my house was connecting flawlessly with the same wireless router, and also the same G3 was previously able to connect.

I was just thinking about a MM wifi problem and preparing to flash back KK, Lollipop, 21C modem... bla bla...

Until I decided to check the router settings and noticed that the router's Auto channel selection option had chosen the channel 12: well... channel 12 is legally and perfectly usable in my country, but I remembered that in USA the last allowed channel is 11..

Just to be sure, I forced the router to use a channel between 1 and 11 and voila'... now the SSID was found and a wireless connection established.

The moral of the story:
the leaked stock European MM version doesn't allow to use 2.4 GHz channels 12 and 13 that are allowed in the European countries....

Any suggestion on how to enable these 2 channels?

 

[wlado93]

Hi, I have Poland V30B ROM and europen version of G3 (D855). And few days ago I changed channel of my wifi router to 13, because I had slow download speed, because in my region are many wifi networks with lower channels. And G3 flawlessly connect to my router. I had hidden SSID, so I had wifi network manually created. I had only one problem with older laptop Lenovo, and that did not see channel 13, I made upgrade of wifi adapter driver and then laptop connect to wifi successfully too

 

[themissionimpossible]

Did you enable 40 MHz channel width on your 2.4 GHz wireless b/g/n/ac router?

 

[wlado93]

I have Channel Width on Auto.. Options are: Auto, 20MHz, 40MHz

 

[themissionimpossible]

I have Poland V30B ROM

Is your version different from the one I installed:
http://forum.xda-developers.com/lg-g3/general/lg-g3-d855-stock-30b-marshmallow-kdz-t3283187

 

[wlado93]

I think it's the same... I have this one: http://forum.xda-developers.com/lg-g3/development/stock-d855-30b-images-kdz-flashables-t3282012

 

[themissionimpossible]

Then it looks like you have installed the hybrid modem (or 21A), while I have the original 30B... correct?
This might be the difference...

 

[wlado93]

Yes, I have hybrid...
You can try it, maybe your problem will be solved
Then write if it caused modem

 

[themissionimpossible]

You can try it, maybe your problem will be solved

Unfortunately I can't root to install the hybrid modem zip (no TWRP available)
Waiting for an official update or a way to change the channel range (maybe using a secret code?)