Dlink dwr-921 c3 router 4g settings unable to use internet

Hi guys, I performed the installation of openWRT on my dwr-921 C3 but now I can't enable the lte modem part to navigate the internet.

I am unable to follow the instructions:

The DWR-921 has an embedded LTE modem. The following instruction describe how to enable the wireless network connectivity.

To enable the wireless network connectivity the following UCI command shall be executed once:

uci set network.wwan=interface 
uci set network.wwan.proto='wwan' 
uci set network.wwan.apn='<your provider apn>' 
uci set network.wwan.pincode='<your sim pin code>'
uci set network.wwan.auto='0' 
uci commit network

please replace the placeholder with your real data.

uci set firewall.@zone[1].network='wan wwan wan6' 
uci commit firewall

and at the next reboot you can enable/disable the connection using the following commands:

ifup wwan / ifdown wwan

At first i dont even know where i can put these commands but after some research i find PuTTY
and manage to get this far

BusyBox v1.28.4 () built-in shell (ash)

| |.-----.-----.-----.| | | |.----.| |_
| - || _ | -| || | | || || |
_____|| |
||||___||| |____|
| W I R E L E S S F R E E D O M

OpenWrt 18.06.2, r7676-cddd7b4c77

root@OpenWrt:~# <== type next command here

after the #tag i enter uci commands but nothing happen,

Now my brain is hearting me. So guys please help me.
if its not going to work tell how to go back to factory version firmware.

  • Explain "but nothing happen."
  • Do you mean that the screen didn't respond to your typing?
  • Have you checked to see if any traffic is passing using ifconfig and check TX and RX packets?

Also, no need to paste the instructions listed on the Wiki.

i said that i opened puTTY go to ip login with than login with root user in the black box
after this line
i paste
uci set network.wwan=interface
than i press enter but nothing happen also i try to paste all uci code line at once and one at a time.
with my apn.
i hope you understand what i am saying and sorry for being such a pain in tech world i am a Legendary noob :smiley: