WR940 V6 can't connect to internet anymore on dd-wrt

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usamaiqbal1177
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PostPosted: Wed Oct 16, 2019 18:32    Post subject: WR940 V6 can't connect to internet anymore on dd-wrt Reply with quote
I just updated from my 1 month old dd-wrt firmware to this new beta firmware (r41218 10/01/2019).my device is TP-Link 940n v6 US version. Internet used to work perfectly on automatic configuration - DHCP. But now the internet doesn't work at all. However when I restore to stock firmware it works on auto configuration. But now on dd-wrt firmware, internet doesn't work at all. Please help. Dd-wrt is must for me.
Also I was able to successfully flash the first factory restore dd-wrt file. The second web flash file that you have to upgrade from router page always fails to flash.
[edit: I flashed the latest beta of 15 October 2019,still the problem is not resolved]
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ian5142
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PostPosted: Thu Oct 17, 2019 16:11    Post subject: ISP Reply with quote
I am assuming you are on Cable based internet.

Automatic DHCP should work fine (Setup - Basic Setup screen). Leave the Gateway and Local DNS at 0.0.0.0.

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usamaiqbal1177
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PostPosted: Thu Oct 17, 2019 16:39    Post subject: Re: ISP Reply with quote
ian5142 wrote:
I am assuming you are on Cable based internet.

Automatic DHCP should work fine (Setup - Basic Setup screen). Leave the Gateway and Local DNS at 0.0.0.0.


Thanks for your reply. Yes, I have a cable internet. And I have left gateway and local dns at 0.0.0.0. The internet still doesn't work. It used to work absolutely fine in previous betas until last week it suddenly stopped working. Had to update it. But the result was still the same.
ddaniel51
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PostPosted: Fri Oct 18, 2019 5:52    Post subject: Reply with quote
Did you reboot the cable modem? If not then do so with every build change.
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usamaiqbal1177
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Joined: 16 Sep 2019
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PostPosted: Fri Oct 18, 2019 9:11    Post subject: Reply with quote
ddaniel51 wrote:
Did you reboot the cable modem? If not then do so with every build change.


Yes I rebooted it many times also after flashing.
servicetech
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Joined: 26 Jun 2019
Posts: 377

PostPosted: Thu Oct 24, 2019 15:24    Post subject: Re: WR940 V6 can't connect to internet anymore on dd-wrt Reply with quote
usamaiqbal1177 wrote:
I just updated from my 1 month old dd-wrt firmware to this new beta firmware (r41218 10/01/2019)


Every build beyond 40863 has GUI issues on my WR941NDv6 that is quite similar to the WR940 v6 (less LED and fixed antenna) I would try this build. The firmware update on your build has issues with GUI, in this case you need to downgrade it with telnet console and reset settings

with internet this should work

cd /tmp
wget ftp://ftp.dd-wrt.com/betas/2019/08-31-2019-r40863/tplink_tl-wr940ndv6/tl-wr940ndv6-webflash.bin
write tl-wr940ndv6-webflash.bin linux
nvram erase && reboot

without internet on device you need to download the file to your PC and ftp it from your PC or check other options to get the file into the /tmp of your router
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