• NETGEAR R6260
• OpenWrt
• OpenWrt Device Page
• Snapshot
• https://github.com/openwrt/openwrt/commits/main/target/linux/ramips/mt7621

• ramips/mt7621

• Stock firmware reports d(149)+p(153)+d(157)+d(161) for 5GHz channels with 153 selected and 11(P)+7(S) for 2.4GHz with 11 selected
• 2026: OpenWRT has slightly higher LAN pings than DD-WRT ¹⁾

• https://downloads.openwrt.org/snapshots/targets/ramips/mt7621/

ssh 'root'@'192.168.1.1'

rm -fv '/tmp/sysupgrade.img' && sync && sysupgrade --force -n -p -v 'https://downloads.openwrt.org/snapshots/targets/ramips/mt7621/openwrt-ramips-mt7621-netgear_r6260-squashfs-sysupgrade.bin'

rm -fv ~/'.ssh/known_hosts' && ping '192.168.1.1'

• OpenSSH-Win64.zip

"%UserProfile%\Downloads\OpenSSH-Win64\ssh.exe" root@192.168.1.1

rm -f '/tmp/sysupgrade.img' && sync && sysupgrade --force -n -p -v 'https://downloads.openwrt.org/snapshots/targets/ramips/mt7621/openwrt-ramips-mt7621-netgear_r6260-squashfs-sysupgrade.bin'

DEL /S "%UserProfile%\.ssh\known_hosts" && ping -t "192.168.1.1"

• https://downloads.openwrt.org/snapshots/targets/ramips/mt7621/

netgear_r6260-squashfs-sysupgrade

• factory.bin
• sysupgrade.bin

• https://openwrt.org/docs/guide-user/luci/luci.essentials

ssh root@192.168.1.1

sync && passwd

apk update && apk add 'luci' && sync

"%UserProfile%\Downloads\OpenSSH-Win64\ssh.exe" root@192.168.1.1

• TODO: DNS extra HOSTS file

wget -O '/etc/blacklist-fg.txt' 'https://scripttiger.github.io/alts/compressed/blacklist-fg.txt'

/etc/blacklist-fg.txt

• http://192.168.1.1/cgi-bin/luci/admin/system/system

• Hostname: Wraeclast
• Timezone: America/New_York

• http://192.168.1.1/cgi-bin/luci/admin/system/admin/dropbear

• Interface: lan

• https://openwrt.org/docs/guide-user/base-system/cron#periodic_reboot
• http://192.168.1.1/cgi-bin/luci/admin/system/crontab

# Restart 2:45:30 AM
45 2 * * * '/bin/sleep' '30s' && '/bin/touch' '/etc/banner' && '/sbin/reboot'

# End

• Delete all

• http://192.168.1.1/cgi-bin/luci/admin/network/network

• DHCP Server → IPv4 Settings → Limit: 48

• Advanced Settings → [ ] Use DNS servers advertised by peer

9.9.9.9

149.112.112.112

• Advanced Settings → [ ] Use DNS servers advertised by peer

2620:fe::fe

2620:fe::9

• Packet Steering: Disabled

• http://192.168.1.1/cgi-bin/luci/admin/network/firewall

• Flow offloading type: Hardware flow offload

• TODO: nginx QUIC 443 UDP

HTTP

80

HTTPS

443

• Back to NETGEAR stock firmware
• Can also initial-flash OpenWRT

• https://github.com/jclehner/nmrpflash

• Reason for the libpcap command: https://github.com/jclehner/nmrpflash/issues/27
• Use factory for OpenWRT image (not sysupgrade)

sudo ln -sv 'libpcap.so.1' '/usr/lib64/libpcap.so.0.8'

sudo ~/'Downloads/nmrpflash-0.9.16-linux/nmrpflash' -L

sudo ~/'Downloads/nmrpflash-0.9.16-linux/nmrpflash' -i 'enp6s0' -f ~/'Downloads/openwrt-ramips-mt7621-netgear_r6260-squashfs-factory.img'

sudo ~/'Downloads/nmrpflash-0.9.16-linux/nmrpflash' -i 'enp6s0' -f ~/'Downloads/R6260-V1.1.0.84_1.0.1/R6260-V1.1.0.84_1.0.1.img'

sudo ~/'Downloads/nmrpflash-0.9.25-linux-x86_64/nmrpflash' -L

sudo ~/'Downloads/nmrpflash' -a '192.168.1.1' -f ~/'Downloads/openwrt-ramips-mt7621-netgear_r6260-squashfs-factory.img' -i 'eno1' -R 'NA' -v

• https://npcap.com/#download
• Last tested: npcap-1.83.exe

• [x] Install Npcap in WinPcap API-compatible Mode

• https://github.com/jclehner/nmrpflash/releases
• Last tested: nmrpflash-0.9.25-win32.zip

• https://www.netgear.com/support/product/r6260/#download
• https://kb.netgear.com/000064951/R6260-Firmware-Version-1-1-0-88
• Last tested: R6260-V1.1.0.88.zip

• Post-flash URL: http://192.168.1.1/BRS_index.htm

"%UserProfile%\Downloads\nmrpflash-0.9.25-win32\nmrpflash.exe" -L

"%UserProfile%\Downloads\nmrpflash-0.9.25-win32\nmrpflash.exe" -a "192.168.1.1" -f "%UserProfile%\Downloads\R6260-V1.1.1.88\R6260-V1.1.1.88_1.0.1.img" -i "net7" -M "255.255.255.0" -R "NA" -v