User Tools

Site Tools


devices:wndr3800_openwrt

Information

  • NETGEAR WNDR3800 1)
  • OpenWrt 2) 3)

Notes

  • :!: Software flow offloading on OpenWRT consistently cause SpeedOf.Me to stop mid-test as of 2021/02/06

Snapshot

sysupgrade

  • This downloads the latest sysupgrade.bin directly and installs it
ssh 'root'@'192.168.1.1'
rm -f '/tmp/sysupgrade.img' && sync && sysupgrade --force -n -v 'https://downloads.openwrt.org/snapshots/targets/ath79/generic/openwrt-ath79-generic-netgear_wndr3800-squashfs-sysupgrade.bin'
ping '192.168.1.1'
ls ~/'Documents/'*'-ssh-keys.tar.gz' && rm -Rf ~/'.ssh' && tar -xvzf ~/'Documents/'*'-ssh-keys.tar.gz' -C ~ '.ssh' && sync

LuCI

ssh 'root'@'192.168.1.1'
opkg update && opkg install 'luci'

URL

Stable

Version Check

  • Latest known version: 19.07.1

Download

  • 19.07.1
  • ath79
ssh 'root'@'192.168.1.1'
rm -f '/tmp/openwrt-stable-ath79-wndr3800-sysupgrade.bin' && wget -O '/tmp/openwrt-stable-ath79-wndr3800-sysupgrade.bin' 'https://downloads.openwrt.org/releases/19.07.1/targets/ath79/generic/openwrt-19.07.1-ath79-generic-netgear_wndr3800-squashfs-sysupgrade.bin'

Install

  • -n doesn't save old config
  • --force forces the flash
  • -v more verbose
ssh 'root'@'192.168.1.1'
sysupgrade --force -n -v '/tmp/openwrt-stable-ath79-wndr3800-sysupgrade.bin'

Configure

DNS

Blocks

Google DNS

  • Some devices hard-code Google DNS, and this bypasses NextDNS and the blocklists set there
  • So the solution to this is to block any requests to Google DNS
  • Name: Google DNS
  • Protocol: Any
  • Source zone: lan
  • Source address: -- Add IP -- (leave at default)
  • Destination zone: wan wan6
  • Action: reject
  • Destination address
8.8.8.8
8.8.4.4
2001:4860:4860::8888
2001:4860:4860::8844

Snapshot

Date Check

Download

  • ath79
rm -f '/tmp/openwrt-snapshot-ath79-wndr3800-sysupgrade.bin' && wget -O '/tmp/openwrt-snapshot-ath79-wndr3800-sysupgrade.bin' 'https://downloads.openwrt.org/snapshots/targets/ath79/generic/openwrt-ath79-generic-netgear_wndr3800-squashfs-sysupgrade.bin'

non-HTTPS

  • ath79
  • May be necessary if wget complains about lack-of SSL support
rm -f '/tmp/openwrt-snapshot-ath79-wndr3800-sysupgrade.bin' && wget -O '/tmp/openwrt-snapshot-ath79-wndr3800-sysupgrade.bin' 'http://downloads.openwrt.org/snapshots/targets/ath79/generic/openwrt-ath79-generic-netgear_wndr3800-squashfs-sysupgrade.bin'

Install

  • -n doesn't save old config
  • --force forces the flash
  • -v more verbose
ssh 'root'@'192.168.1.1'
sysupgrade --force -n -v '/tmp/openwrt-snapshot-ath79-wndr3800-sysupgrade.bin'

LuCI

ssh 'root'@'192.168.1.1'
opkg update && opkg install 'luci' && opkg install 'luci-ssl-nginx'

Configure

Recovery

TFTP

Notes

  • Can seemingly still use tftp even if you can't ping the router

Image

  • Pick one
  • :!: The stable image URL will need updated if there's a newer version available
wget -O ~/'f.img' 'https://downloads.openwrt.org/releases/19.07.6/targets/ath79/generic/openwrt-19.07.6-ath79-generic-netgear_wndr3800-squashfs-factory.img'
wget -O ~/'f.img' 'https://downloads.openwrt.org/snapshots/targets/ath79/generic/openwrt-ath79-generic-netgear_wndr3800-squashfs-factory.img'

TFTP

sudo dnf install 'tftp' -y && sync
tftp
verbose
trace
rexmt 1
binary
connect 192.168.1.1
put f.img
sudo dnf remove 'tftp' -y && sync

nmrpflash

Images

  • :!: If using an OpenWRT image, use the factory image

nmrpflash

sudo ln -sv 'libpcap.so.1' '/usr/lib64/libpcap.so.0.8'
sudo ~/'Downloads/nmrpflash-0.9.15-linux/nmrpflash' -L
sudo ~/'Downloads/nmrpflash-0.9.15-linux/nmrpflash' -i 'enp5s0' -f ~/'Downloads/openwrt-ath79-generic-netgear_wndr3800-squashfs-factory.img'
sudo ~/'Downloads/nmrpflash-0.9.15-linux/nmrpflash' -i 'enp5s0' -f ~/'Downloads/openwrt-19.07.6-ath79-generic-netgear_wndr3800-squashfs-factory.img'
sudo ~/'Downloads/nmrpflash-0.9.15-linux/nmrpflash' -i 'enp5s0' -f ~/'Downloads/WNDR3800-V1.0.0.52/WNDR3800-V1.0.0.52.img'
devices/wndr3800_openwrt.txt · Last modified: 2021/02/06 05:40 by Sean Rhone