Making Nexx wt3020 uboot - vanaware/openwrt GitHub Wiki

Making Nexx WT3020 bootloader breed install

link : https://forum.openwrt.org/viewtopic.php?pid=369826#p369826
filename "breed-u-boot-nexx-3020-7620-english.bin"

It is an Breed translated to English language bootloaders of Nexx WT-3020 (MT7620A / MT7620N universal, baud rate 57600, reset button GPIO # 1)

Thanks to https://breed.hackpascal.net/ and https://blog.hackpascal.net/breed/

Backup do u-boot original

Download from here

ssh [email protected]
dd if=/dev/mtd0 of=/tmp/wt3020-8M-original-uboot.bin.bin
exit
scp [email protected]:/tmp/wt3020-8M-original-uboot.bin ./

Download file with image unlocked uboot and flash it

Stock image already has unlocked uboot, if you still on it go into next step, otherwise flash stock image bellow using Luci interface and not saving settings

Download from here

scp NEXX-3020-orig.bin [email protected]:/tmp
ssh [email protected]
cat /proc/mtd
mtd0: 00030000 00010000 "u-boot"
mtd1: 00010000 00010000 "u-boot-env"
mtd2: 00010000 00010000 "factory"
mtd3: 007b0000 00010000 "firmware"
mtd4: 00145acd 00010000 "kernel"
mtd5: 0066a533 00010000 "rootfs"
mtd6: 00460000 00010000 "rootfs_data"
ifconfig eth0
eth0      Link encap:Ethernet  HWaddr (take note of yours)
          inet6 addr: fe80::2228:18ff:fea1:e52e/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:15264 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5424 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:10437881 (9.9 MiB)  TX bytes:1195573 (1.1 MiB)
          Interrupt:5 
cd /tmp
sysupgrade -d 5 -v -n NEXX-3020-orig.bin

Download uboot mod breed file and Flash it

original link : http://ge.tt/4cpMxnn2/v/2

Download from here

python -m SimpleHTTPServer

telnet 192.168.8.1 (login: nexxadmin pass: y1n2inc.com0755 )
wget http://192.168.1.35:8000/breed-u-boot-nexx-3020-7620-english.bin
mtd_write unlock mtd0 
mtd_write erase mtd0 
mtd_write -r write breed-u-boot-nexx-3020-7620-english.bin mtd0

Enter into u-boot recovery

Now with RESET and power on, after about 3,4 seconds, all lights start blink, you can access failsafe web UI at http://192.168.1.1
Or just net cat:

nc -u -p 6666 -v 192.168.1.1 6666

In other words ...
IP address computer network connection is set to automatically
Power off the router
Press the reset button or WPS key
Turn on the router, if you see the router part or all of the LED flash 4 times
Plug in ethernet cable, open browser : 192.168.1.1

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