EnGenius ESR1750

EnGenius ESR1750

OEM source code available at: OEM Link (Dropbox, broken link) Mirror (Google Drive)

sha1sum: eb653c49a0a8766e12da7f79eb1bffc759b43c57 ESR1750_GPL_RELEASE.tar.zip

ESR1750 Flash Layout
Layer0 spi0.0: m25p80 16384KiB
Layer1 mtd0 u-boot 192KiB mtd1 u-boot-env 64KiB mtd9 firmware 14656KiB mtd5 manufacture 1024KiB mtd6 backup 64KiB mtd7 storage 320KiB mtd8 caldata 64KiB
Layer2 mtd2 kernel 1408KiB mtd3 rootfs 13248KiB
mountpoint /
filesystem mini_fo/overlayfs
Layer3 mtd4 rootfs_data 10688KiB
Size in KiB 192KiB 64KiB 1408KiB 2560KiB 10688KiB 1024KiB 64KiB 320KiB 64KiB
Name u-boot u-boot-env kernel rootfs rootfs_data manufacture backup storage caldata
mountpoint none none none /rom /overlay none none none none
filesystem none none none SquashFS JFFS2 none none none none


Boot Serial Console and Press Key 2 Use TFTP server with Image openwrt-ar71xx-generic-esr1750-squashfs-sysupgrade.bin At this time ath10 is missing.


If you have already installed OpenWrt and like to reflash for e.g. upgrading to a new OpenWrt version you can upgrade using the mtd command line tool. It is important that you put the firmware image into the ramdisk (/tmp) before you start flashing.

LuCI Web Upgrade Process

Terminal Upgrade Process

FIXME After adding the device to the repository, correct the missing values in the commands.

  • Login as root via SSH on
  • Use the following commands to upgrade.
cd /tmp/
wget http://http://downloads.openwrt.org/snapshots/trunk/XXX/xxx.abc
sysupgrade /tmp/xxx.abc
  • If sysupgrade does not support this router, use the following commands.
cd /tmp/
wget http://http://downloads.openwrt.org/snapshots/trunk/XXX/xxx.abc
mtd write /tmp/xxx.abc linux && reboot


  • Download OEM .dlf firmware file to /tmp on your PC
  • Decode .dlf via
   ./mksenaofw -d /tmp/<oem-firmware.dlf> -r 0x101 -p 0x61 -t 2 -o /srv/tftp/oem.img
  • Boot Serial Console and Press Key 2
  • Use TFTP server with Image oem.img

Basic configuration After flashing, proceed with this.
Set up your Internet connection, configure wireless, configure USB port, etc.

The default network configuration is:

Interface Name Description Default configuration
br-lan LAN & WiFi
vlan0 (eth0.0) LAN ports (1 to 4) None
vlan1 (eth0.1) WAN port DHCP
wl0 WiFi Disabled
wl1 WiFi Disabled

FIXME This might be wrong.

Port Switch port
LAN 4 1
LAN 3 2
LAN 2 3
LAN 1 4
? 6

hardware.button on howto use and configure the hardware button(s).

The EnGenius ESR1750 has two buttons. They are Reset and WPS. Here, we merely name the buttons, so we can use them in the above Howto:

Reset reset
WPS wps

FIXME I just guessed the names, I haven't actually gotten the real ones yet.

Instruction set MIPS
Vendor Qualcomm Atheros
bootloader U-Boot
System-On-Chip QCA9558-AT4A Rev 2
CPU @Frq MIPS 74Kc Vers. ?.? @720MHz
Flash size 16 MiB
Flash Chip Macronix MX25L12845EMI-10G
RAM size 2* 128 MiB
RAM Chip Nanya NT5TU64M16GG-AC
Wireless No1 SoC-integrated: QCA9558-AT4A w/ 3×3 MIMO for 2.4GHz 802.11b/g/n
Wireless No2 Mini PCI-e: QCA9880-BR4A w/ 3×3 MIMO for 5GHz 802.11a/n/ac
switch Qualcomm Atheros QCA8337-AL3C (Gigabit, VLAN)
Modem none
USB Yes 1 x 2.0
Serial Yes



Note: This will void your warranty!

  • To remove the case, first flip the router upside-down, so that you can see the four screws holding it together.
  • Then, use a screwdriver to remove the screws.
  • Flip the router right-side up (EnGenius logo on top) and gently lift the top off.
  • Unscrew the two screws holding the circuit board.
  • Flip the router over again and pull the bottom casing away from the router (it might get stuck on the ethernet ports).
    • Be sure not to lose the WPS button that will almost certainly fall out after removing the back case.
  • You should now have access to all the important bits of the router. If you need to access the rest of it, just flip over the circuit board.

port.serial general information about the serial port, serial port cable, etc.

Photo of the serial header:
The ESR1750 serial header

The pins, from left to right:

4 3 2 1
Rx Tx GND VCC (3.3V)

The serial port on the ESR1750 has a 4-pin 0.1“ header pre-soldered to the board, making connecting to it trivial. It uses 3.3V logic levels, so make sure your serial cable either only outputs 3.3V or has a 3.3V mode.

Serial connection parameter: 115200, parity: none, flow control: none.

port.jtag general information about the JTAG port, JTAG cable, etc.

I don't think this router has any JTAG test points.

U-Boot 1.0.0 (May 23 2013 - 17:15:24) Product Name: ESR1200_1750 ap136 - Scorpion 1.0 DRAM:256 MB Now running in RAM - U-Boot at: 8ffc8000 Flash Manuf Id 0xc2, DeviceId0 0x20, DeviceId1 0x18 Flash size 16MB, sector count = 256 In: serial Out: serial Err: serial reset_switch: reset_usb: Multi Net: ath_gmac_enet_initialize... athrs_sgmii_res_cal: cal value = 0xe No valid address in Flash. Using fixed address ath_gmac_enet_initialize: reset mask:c02200 Scorpion ----> S17 PHY * : cfg1 0x80000000 cfg2 0x7114 eth0: 00:03:7f:09:0b:ad athrs17_reg_init: SUPPORT_QCA8337 athrs17_reg_init: QCA8337 ID=1302 athrs17_reg_init: complete eth0 up eth0 athrs17_disable_all_port Setting 0x18116290 to 0x60c0214f Please choose the operation: 1: Load system code to SDRAM via TFTP. 3: Boot system code via Flash (default). 0 3: System Boot system code via Flash. athrs17_set_portvlan_isolated complete ## Booting image at 9f040000 ... Image Name: Linux Kernel Image Created: 2013-08-15 6:59:16 UTC Image Type: MIPS Linux Kernel Image (lzma compressed) Data Size: 1867435 Bytes = 1.8 MB Load Address: 80002000 Entry Point: 802ad4d0 Verifying Checksum at 0x9f040040 ...OK Uncompressing Kernel Image ... OK Starting kernel ... Booting QCA955x init started: BusyBox v1.7.5 (2013-08-15 14:50:11 CST) starting pid 807, tty '/dev/console': '/sbin/config_init' mknod: /dev/ttyS0: File exists mknod: /dev/ttyS1: File exists Config Init version: date: 2013/08/15 Tue Jan 1 00:00:00 UTC 2013 ln: /lib/./modules: File exists starting pid 867, tty '/dev/ttyS0': '/sbin/config_term' [sysUtil] Hardware ID - 01010062 [sysUtil] Load vendor[1] information ************************************************************************ * ESR1750 * ************************************************************************ KernelApp/Ramdisk Ver: Date:2013/08/15 password:

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  • Last modified: 2024/02/12 08:58
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