- Grab the firmware from here: https://downloads.openwrt.org/barrier_breaker/14.07/ar71xx/generic/
- From command line :
cd /tmp
wget https://downloads.openwrt.org/barrier_breaker/14.07/ar71xx/generic/openwrt-ar71xx-generic-tl-mr3040-v2-squashfs-sysupgrade.bin
sysupgrade -n -v openwrt-ar71xx-generic-tl-mr3040-v2-squashfs-sysupgrade.bin
Preliminary : Format your flash drive with an ext4 or ext3 filesystem.
for example format from your PC: http://redacacia.files.wordpress.com/2013/04/mr3420_11.jpg
Install Packages:
root@OpenWrt:~# opkg update root@OpenWrt:~# opkg install kmod-usb-storage kmod-fs-ext4 block-mountFind the name of your flash drive with the : block info
root@OpenWrt:~# block info/dev/mtdblock2: UUID="20ad40ea-d33a421e-785b7d2d-ada99230" VERSION="4.0" TYPE="squashfs" /dev/mtdblock3: TYPE="jffs2"
/dev/sda2: UUID="9fa36631-ac09-42a0-b090-f61efe6c1bfb" NAME="EXT_JOURNAL" VERSION="1.0" TYPE="ext4"
Create a directory and mount your device on it:
root@OpenWrt:~# mkdir -p /mnt/flash root@OpenWrt:~# mount -t ext4 /dev/sda2 /mnt/flash
Copy the router's internal flash to the flash drive :
root@OpenWrt:~# mkdir -p /tmp/cproot root@OpenWrt:~# mount --bind / /tmp/cproot root@OpenWrt:~# tar -C /tmp/cproot -cvf - . | tar -C /mnt/flash -xf - root@OpenWrt:~# umount /tmp/cproot
Edit /etc/config/fstab file :
root@OpenWrt:~# vi /etc/config/fstab
config global option delay_root 1 config global automount option from_fstab 1 option anon_mount 1 config global autoswap option from_fstab 1 option anon_swap 0 config mount option target / option device /dev/sda2 option fstype ext4 option options rw,sync option enabled 1 option enabled_fsck 0 config swap option device /dev/sda1 option enabled 1
Enable and Start fstab :
root@OpenWrt:~# /etc/init.d/fstab enable root@OpenWrt:~# /etc/init.d/fstab start
Restart the router :
root@OpenWrt:~# reboot -f
After booting and login, check the mount point:
root@OpenWrt:~# mount
You should see that /dev/sda2 has been mounted on /
root@OpenWrt:~# mount rootfs on / type rootfs (rw) /dev/root on /rom type squashfs (ro,noatime) proc on /proc type proc (rw,noatime) sysfs on /sys type sysfs (rw,noatime) tmpfs on /tmp type tmpfs (rw,nosuid,nodev,noatime) /dev/sda2 on / type ext4 (rw,relatime,data=ordered) tmpfs on /dev type tmpfs (rw,relatime,size=512k,mode=755) devpts on /dev/pts type devpts (rw,relatime,mode=600) debugfs on /sys/kernel/debug type debugfs (rw,noatime)
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