Tp-Link MR3420 v2 when viewed on the openwrt web https://openwrt.org/toh/tp-link/tl-mr3420 does not support OpenWrt 19.07.5.Only release until openwrt 17.01.7.
But by getting a modified firmware without luci and ppp, OpenWrt 19.07.5 can be installed on TP-Link MR3420 v2.4.
The following is how to Extroot and install luci web on openwrt TP-Link MR3420 v.24 with firmware Compilation results for OpenWrt 19.07.5, TPLINK 3420 v2, USB-NET-WiFi, without LuCI, PPP.bin which can be obtained from the web in English Russia.
Detail play Vdeo and activated feature CC/Subtitle to see detail intruction
firmware Compilation results for OpenWrt 19.07.5, TPLINK 3420 v2, USB-NET-WiFi, without LuCI, PPP.bin
- openwrt-ar71xx-tiny-tl-mr3420-v2-squashfs-factory.bin
- openwrt-ar71xx-tiny-tl-mr3420-v2-squashfs-sysupgrade.bin
firmware Link https://bit.ly/3Bl94pB
How to download on this blog:
If the "Take Me" page appears, just click "Take Me" and follow the next instructions
Before extrooting the flash drive,we first create a partition using the Mini Partition Wizard tools.
Flashdisk (Minimum 2GB or Higher)
First primary partition:
- Create a 512MB swap partition to free up ram
Second primary partition:
- Create an ext4 partition, use all the remaining partitions to be made to ext4
Access 192.168.1.1 in the browser. No Luci yet.
Because this firmware is Non Luci and PPP
Previously, the Flashdisk that had been partitioned "sda1 Linux Swap" and "sda2 Ext4" was plugged
into the router's usb port
find out the number of Router's default ROM
root@OpenWrt:~#df -h
To find out UUID flash
root@OpenWrt:~#block info
Example output:
/dev/mtdblock2: UUID="9fd43c61-c3f2c38f-13440ce7-53f0d42d" VERSION="4.0" MOUNT="/rom" TYPE="squashfs"
/dev/mtdblock3: MOUNT="/overlay" TYPE="jffs2"
/dev/sda2: UUID="fdacc9f1-0e0e-45ab-acee-9cb9cc8d7d49" VERSION="1.4" TYPE="ext4"
/dev/sda5: Version="1" TYPE="swap"
Run WinSCP
Access 192.168.1.1 user root password root
Find folder /etc/config/fstab
Output :
config 'global'
option anon_swap '0'
option anon_mount '0'
option auto_swap '1'
option auto_mount '1'
option delay_root '5'
option check_fs '0'
For UUID copy your Flasdisk UUID Ext4 obtained in PuTTy when checking "block info"
/dev/sda2: UUID="fdacc9f1-0e0e-45ab-acee-9cb9cc8d7d49" VERSION="1.4" TYPE="ext4"
Change or edit like this :
config 'global'
option anon_swap '0'
option anon_mount '1'
option auto_swap '1'
option auto_mount '1'
option delay_root '5'
option check_fs '0'
config 'swap'
option device '/dev/sda1'
option enabled '1'
config 'mount'
option target '/mnt/sda2'
option device '/dev/sda2'
option uuid 'fdacc9f1-0e0e-45ab-acee-9cb9cc8d7d49'
option enabled '1'
option fs_type 'ext4'
option options 'rw,sync'
Click SAVE and CLOSE
Open PuTTy type :
root@OpenWrt:~#block mount
root@OpenWrt:~#tar -C /overlay -cvf - . | tar -C /mnt/sda2 -xf -
root@OpenWrt:~#mkdir -p /tmp/cproot
root@OpenWrt:~#mount --bind / /tmp/cproot
root@OpenWrt:~#tar -C /tmp/cproot -cvf - . | tar -C /mnt/sda2 -x
Wait until the process is complete
root@OpenWrt:~#umount /tmp/cproot
Open WinScp find and edit /etc/config/fstab
Change or edit like this :
config 'global'
option anon_swap '0'
option anon_mount '1'
option auto_swap '1'
option auto_mount '1'
option delay_root '5'
option check_fs '0'
config 'swap'
option device '/dev/sda1'
option enabled '1'
config 'mount'
option target '/overlay'
option device '/dev/sda2'
option uuid 'fdacc9f1-0e0e-45ab-acee-9cb9cc8d7d49'
option enabled '1'
option fs_type 'ext4'
option options 'rw,sync'
option is_rootfs '1
SAVE AND CLOSE
Reboot Router
root@OpenWrt:~#reboot
Wait for the router to finish rebooting
Open PuTTy Access back 192.168.1.1 user root password root
root@OpenWrt:~#df -h
If the display looks like this,
EXTroot is successful,
dev/sda2/overlay matches the capacity of the previously created EXT4 partition.
Open WinScp and check folder
The /mnt/sda2 folder already exists
Install LUCI
First connect the router with an internet source
eth0 = WAN means that the router's WAN port is connected to your internet source
so that the opkg update can run
root@OpenWrt:~#opkg update
Wait until the process is complete
Install Luci by typing
root@OpenWrt:~#opkg install luci
Wait for the Luci webui installation process to finish
The Luci installation process is complete
Open Browser access 192.168.1.1 user root password root
EXTroot capacity and install luci is appropriate
