OpenWrt di TL-MR3020

• Arsitektur MIPS
• Atheros AR9330 rev 1
• CPU Atheros AR7240@400MHz
• RAM 32 MiB
• Flash 4 MiB
• Wi-Fi 802.11 b/g/n 150Mbps
• Porta Fast Ethernet 100 Mbps, 1 buah
• Porta USB 2.0, 1 buah

• Komputer/laptop dengan sistem GNU/Linux
• TP-Link TL-MR3020
• Kabel UTP Cat5/6 dengan RJ45 terpasang (sudah disediakan di dalam paket)
• Kabel daya mini-USB (sudah disediakan di dalam paket)
• Firmware OpenWrt untuk TL-MR3020

• Sakelar di MR3020 kebetulan diset ke 3G
• Colok kabel daya ke porta mini-USB di MR3020, dan ujung lainnya ke porta USB komputer/laptop
• Colok kabel UTP melalui RJ45-nya ke porta Ethernet di MR3020, dan ujung lainnya ke porta Ethernet di komputer/laptop
• Jalankan perintah

  dhclient eth0

• Buka panel kendali di peramban dengan mengunjungi http://192.168.0.254/, pengguna admin, dan kata sandi admin
• Pilih System Settings - Firmware Upgrade.

  Firmware Version: 3.12.11 Build 111128 Rel.34725n
  Hardware Version: MR3020 v1 00000000

• Kemudian pilih berkas firmware OpenWrt yang sudah diunduh dengan tombol Telusuri
• Tekan tombol Upgrade dan selesai. Sila pulang :D

Daftar paket-paket OpenWrt.

• Konfigurasi repo opkg.

  vim /etc/opkg.conf

• Mutakhirkan indeks paket.

  opkg update

• Pasang paket.

  opkg install wget-nossl terminfo libncurses screen

• Download the factory original firmware from the official site.

  $ wget -c http://www.tp-link.com/resources/software/TL-WR743ND_V2_131129.zip

• Save the hash of the archive.

  $ sha1sum TL-WR743ND_V2_131129.zip > TL-WR743ND_V2_131129.zip.sha1

• Unzip the archive.

  $ unzip TL-WR743ND_V2_131129.zip
  Archive:  TL-WR743ND_V2_131129.zip
    inflating: wr743ndv2_en_3_17_0_up_boot(131129).bin
    inflating: How to upgrade TP-LINK Wireless  N Router.pdf

• Copy *.bin to the machine which we want to flash with scp.

  scp *.bin root@192.192.168.1.1:

• Login to the machine with SSH.

  $ ssh root@192.168.1.1
  root@192.168.1.1's password:

  # ls
  wr743ndv2_en_3_17_0_up_boot(131129).bin

  # df -h
  Filesystem                Size      Used Available Use% Mounted on
  rootfs                  640.0K    600.0K     40.0K  94% /
  /dev/root                 2.3M      2.3M         0 100% /rom
  tmpfs                    14.0M    536.0K     13.5M   4% /tmp
  /dev/mtdblock3          640.0K    600.0K     40.0K  94% /overlay
  overlayfs:/overlay      640.0K    600.0K     40.0K  94% /
  tmpfs                   512.0K         0    512.0K   0% /dev

• Try to flash the firmware with mtd.

  # mtd -r write wr743ndv2_en_3_17_0_up_boot\(131129\).bin firmware

  Unlocking firmware ...
  
  Writing from wr743ndv2_en_3_17_0_up_boot(131129).bin to firmware ...  [e]Failed to erase block

• If it is failed, then use dd command first to skip the first 257 512-byte block.

  # mv wr743ndv2_en_3_17_0_up_boot\(131129\).bin orig.bin

  # dd if=orig.bin of=tplink.bin skip=257 bs=512

  7680+0 records in
  7680+0 records out

• Run to reflash the firmware again.

  # mtd -r write tplink.bin firmware

  Unlocking firmware ...
  
  Writing from tplink.bin to firmware ...     
  Rebooting ...
  Connection to 192.168.1.1 closed by remote host.
  Connection to 192.168.1.1 closed.

• Back to original firmware
• TP-Link TL-MR3020