Updating OpenWRT on a TP-LINK TL-WR703N

I was writing another page on installing OpenWRT and realized that the version I was using was no longer current. To make that page more relevant I thought I should document the steps to update the OpenWRT installation on a TP-LINK TL-WR703N.

  1. reboot the 703N
  2. telnet into your 703N as root
  3. Make sure the 703N can access the internet. My 703N is connected connected via it's Ethernet port (192.168.1.1) to my laptop (192.168.1.2) which is connected to the internet.
  4. Get the updated firmware
    cd /tmp
    wget http://downloads.openwrt.org/snapshots/trunk/ar71xx/openwrt-ar71xx-generic-tl-wr703n-v1-squashfs-sysupgrade.bin
  5. Get the MD5 sums to verify the firmware file.
    wget http://downloads.openwrt.org/snapshots/trunk/ar71xx/md5sums
  6. Extract the one MD5 checksum we need:
    grep openwrt-ar71xx-generic-tl-wr703n-v1-squashfs-sysupgrade.bin md5sums >| onefile.md5
  7. Verify the firmware file we downloaded
    md5sum -c onefile.md5
  8. Look for: openwrt-ar71xx-generic-tl-wr703n-v1-squashfs-sysupgrade.bin: OK
  9. Run the upgrade command:
    sysupgrade -v /tmp/openwrt-ar71xx-generic-tl-wr703n-v1-squashfs-sysupgrade.bin