OpenWrt Forum Archive

Topic: Nexx WT3020 U-boot mod?

The content of this topic has been archived between 15 Mar 2016 and 30 Apr 2018. Unfortunately there are posts – most likely complete pages – missing.

jonny, unfortunately I didn't encounter stock firmware backup for A revision (4M). However you can successfully flash intermediate Padavan firmware with ssh and mtd enabled, after that you can flash bootloader (I recommend breed-mt7620-reset1.bin), and after that flash any firmware you want.

(Last edited by ulmwind on 12 Nov 2016, 15:10)

Hello "roger_", can you tell me if this new U-boot mod (for Nexx WT3020F) called: breed-mt7620-reset1.bin (and downloaded from: breed.hackpascal.net with revision: r1008 [2017-01-16], actually is the latest version) is in English language or only in Chinese language?. Answer please and thank you

Haven't used it recently but when I did it was Chinese.

OK, then, can you tell me where I can download an stable "breed-mt7620-reset1.bin" but in English language?. Answer please and thank you very much

No idea, but it's not  hard to figure out what does what with the Chinese one.

Hello "rambler", do you know if for the Nexx WT3020F, this new U-boot named: u-boot-nexx-3020-7620.bin is in English language or only in Chinese language?. Answer please and thank you

malfi wrote:

The following worked just without any problem on my wt3020f (8mb).
Download the following archive:
https://mega.co.nz/#!jdRECSxA!tq4kk0zHI … svxoP9gYe4
unzip it and check it:
$ md5sum u-boot-nexx-3020-7620.bin
9002d70c8af2ca878df956934b122a39  u-boot-nexx-3020-7620.bin
offer it 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 192.168.8.5
$ telnet 192.168.8.1 (login: nexxadmin pass: y1n2inc.com0755 )
# cd /tmp/
# wget http://192.168.8.5:8000/u-boot-nexx-3020-7620.bin
// 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.

$ sudo ifconfig eth0 192.168.1.5

On http://192.168.1.1 is the uboot-webinterface
download https://downloads.openwrt.org/snapshots … pgrade.bin
and upgrade it directly from uboot. (Firmware Upgrade -> generic firmware -> firmware)

after a reboot:

$ telnet 192.168.1.1
Trying 192.168.1.1...
Connected to 192.168.1.1.
Escape character is '^]'.
=== IMPORTANT ============================
  Use 'passwd' to set your login password
  this will disable telnet and enable SSH
------------------------------------------


BusyBox v1.22.1 (2015-03-06 13:37:14 UTC) built-in shell (ash)
Enter 'help' for a list of built-in commands.

Hello "malfi", do you know if for the Nexx WT3020F, this new U-boot called: "u-boot-nexx-3020-7620.bin" is in English language or only in Chinese language?. Answer please and thank you so much

after flashing breed uboot, and flash openwrt firmware from uboot gui,
i have problem upgrading openwrt firmware from openwrt gui
it says
"The uploaded image file does not contain a supported format. Make sure that you choose the generic image format for your platform"
is it known issue or am i missing something?

(Last edited by dony71 on 1 Dec 2017, 00:57)

Finally and with the valious help of the creator of BREED: "HackPascal" (https://blog.hackpascal.net/breed/ https://breed.hackpascal.net) my little contribution for BREED translated in English language thanks to HackPascal (thank you very much HackPascal and I hope your soon contribution of all BREED bootloaders translated to English language too, thank you a lot):

http://ge.tt/4cpMxnn2
https://www.sendspace.com/filegroup/iZ% … M3J%2Bwpbw

You will find Breed translated to English language for the bootloader of:

"breed_u-boot-nexx-3020-7620-english.bin" only for bootloader of Nexx WT-3020 (MT7620A / MT7620N universal, baud rate 57600, reset button GPIO # 1)

and "breed-ar724x-r1009-english.bin": for the bootloaders of the following WiFi routers (AR724X universal, Fast wired, baud rate 115200, Reset button GPIO # 11, QSS button GPIO # 12):

TP-LINK TL-WR740N v1 / v2 / v3
TP-LINK TL-WR740N v4 (Chinese version)
TP-LINK TL-WR741N v1 / v2 / v3
TP-LINK TL-WR841N v5
TP-LINK TL-WR940N v1
TP-LINK TL-WR941N v4
TP-LINK TL-WR941N v5
TP-LINK TL-WA801N v1
TP-LINK TL-MR3220 v1
TP-LINK TL-MR3420 v1
TP-LINK TL-WR840N v1
TP-LINK TL-WR841N v7
TP-LINK TL-WR842N v1
Fast FW300R v2
Mercury MW300R v2

(Last edited by cjrs on 9 Jan 2018, 21:22)

The discussion might have continued from here.