Upgrade OpenWRT on MW151RM3G

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Prepare

First go to http://downloads.openwrt.org/barrier_breaker/14.07/ar71xx/generic/, find the “wr703n”, download the 2 files.

$ ls -l openwrt*
-rw-r----- 1 Trusty root 3932160 Nov 24 13:50 openwrt-ar71xx-generic-tl-wr703n-v1-squashfs-factory.bin
-rw-r----- 1 Trusty root 3342340 Nov 24 13:50 openwrt-ar71xx-generic-tl-wr703n-v1-squashfs-sysupgrade.bin

sysupgrade.bin is for upgrading.

Upgrade

System-> Backup/Flash Firmware.
Flash New firmware image, choose File. Select the sysupgrade.bin, Upgrade.

Tehn you have to wait for the changes to be applied, around half a miniutes, then everything will be OK.

Use Flash Disk For Booting

Cause the inner storage is only 4M-BYTE, we have to enlarge it via adding the external flash disk .

$ opkg update
$ opkg install block-mount kmod-usb-storage fdisk

Comparing to Attitude Adjustment, the kmod-fs-ext4 couldn’t be installed, thus we have to formt the flash disk into ext3 format.

Cause we won’t installed the kmod-fs-ext4, so the external system couldn’t be used, this time just flash back the Attitude Adjustment.

Rootfs on External Storage

Copy the filesystem into the external disk:

root@OpenWrt:/mnt/sda2# tar -C /overlay -cvf - . | tar -C /mnt/sda2 -xf -
root@OpenWrt:/mnt/sda2# ls
etc         lib         lost+found  mnt         sbin        usr

Configure the /etc/config/fstab:

config mount
        option target   /overlay
        option device   /dev/sda2
        option fstype   ext3
        option options  rw,sync
        option enabled  1
        option enabled_fsck 0

Reboot and you got 8G rootfs enabled router.

Wireless-> Wired.

First set the wireless port to client mode:

Then set the wired port to static address:

Now reset your router and connect the ethernet port with a line, the equipments who only have ethernet could use router’s wireless signal for accessing the network.
Later when I study in the library, this router could easily transfer the signal from wireless to wired and let surfacePro work properly.