Post new topic   This topic is locked: you cannot edit posts or make replies.    DD-WRT Forum Forum Index -> Ralink SoC based Hardware
Author Message
DD-WRT Novice

Joined: 12 Sep 2017
Posts: 4

PostPosted: Sat May 05, 2018 7:50    Post subject: NEXX WT3020 DD-WRT TESTED AND WORKS Reply with quote
The WT3020F, WT3020H and WT3020AD have the same hardware. They run on MT7620N. It is supported by many (gargoyle, openwrt, rooter, etc.) but listed as "donated router needed" at DD-WRT.

For me, WT3020 works splendid with DD-WRT. DISCLAIMER:

The Buffalo WHR-300HP2 runs on MT7620A. It has more ports. It's firmware is what I used, successfully.

Start with the stock firmware.
>> If you already flashed (openwrt, gargoyle, rooter, etc all have firmwares for this router), go back to stock. I did not need to try it, but found a stock here:
direct link:

Proceed by upgrading u-boot with breed-mt7620-reset1.bin from hackpascal:
>> It is chinese, use online translater services. A few English hacks of unknown source can be found online if you're adventurous.

Uboot upgrading instructions described at:

offer (the uboot bin) via http, so it can be downloaded from the router
$ python -m SimpleHTTPServer

directly connect the router via the lan port to your computer.
$ sudo ifconfig eth0
$ telnet (login: nexxadmin pass: y1n2inc.com0755 )
# cd /tmp/
# wget
// proceed only, if you successfully downloaded the new uboot file
# mtd_write unlock mtd0
GetFileSize: No such file or directory
Unlocking mtd0 ...
# mtd_write erase mtd0
GetFileSize: No such file or directory
Unlocking mtd0 ...
Erasing mtd0 ...
Erase char is 255
# mtd_write -r write u-boot-nexx-3020-7620.bin mtd0
Unlocking mtd0 ...
Writing from u-boot-nexx-3020-7620.bin to mtd0 ... [w]

it hangs now, just wait another minute and then power it down and start it up again
To check if the new uboot works, press and hold reset-button, then connect power.
Once the led flashes several times, you can release the reset button.

Download latest DD-WRT for Buffalo WHR-300HP2 here:
I used a build early April and also the latest as of this writing:

I went the safe way:
first from uboot: firmware.uimage
then from DD-WRT: buffalo_whr_300hp2-webflash.bin

Configure at will.

Bugs / limitations:
1. LAN and WAN are inversed in DD-WR
2. reset button does not work in DD-WRT (which is why I recommend flashing uboot first in case you brick it, or simply forget the GUI password)

Works fantastic for the last month, and super stable for me.

Not sure how to do a line for the forum search, so here it goes:
NEXX WT3020 WT 3020 WT3020F 3020F WT3020H 3020H 3020AD WT3020AD
DD-WRT Novice

Joined: 14 Aug 2018
Posts: 6

PostPosted: Tue Aug 14, 2018 17:02    Post subject: Reply with quote
Thanks for your guide.

Last version I got working is June 10th:

From version 06-16-2018-r36154 June 16th and later the WT3020 no longer boots.

Checked svn, tickets etc.
but could not find anything changed specific to this buffalo_whr_300hp2 since December 12th 2017.

Anyone knows what changed breaking the use of buffalo_whr_300hp2 on WT3020 ?
DD-WRT Novice

Joined: 04 Jan 2016
Posts: 1

PostPosted: Fri Feb 01, 2019 17:40    Post subject: Reply with quote
Are 4g modems supported in this firmware?
DD-WRT Novice

Joined: 21 Apr 2019
Posts: 1

PostPosted: Sun Apr 21, 2019 8:07    Post subject: Reply with quote
This Buffalo firmware does not have USB support, so it can't support any 4G modems.

By the way, I offered donate modem and maintainer was absolutely not interested.

Moderator edit 03.16.2021:

If a more recent build will flash to this unofficially supported device, please PM me to unlock this thread to report, thanks. -kp69
Display posts from previous:    Page 1 of 1
Post new topic   This topic is locked: you cannot edit posts or make replies.    DD-WRT Forum Forum Index -> Ralink SoC based Hardware All times are GMT


Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum