OpenWrt

This router is based on the Ralink RT3052 Soc. With the original firmware it was capable to distribute internet connection from an USB HSDPA stick. It has 1 WAN and 2 LAN ports.

Currently there is no support for this device, but there are several RT3052F based devices supported.

Note: This will void your warranty!

1. There is only one screw in the middle of the device. Check the board picture below for it's position.

Console port CN1 uses 3.3 V signaling at speed 57600 8n1. Header is pre-installed

There is a 14 pin unpopulated SMD pinhead near the reset button. it should be JTAG. The pins marked with ? are unknown currently, but research is in progress. Probably this is EJTAG 2.5 compilant.

U-boot Ver:1.0.1.1 2009/09/25


Board: Ralink APSoC DRAM:  32 MB  1*32 MB
============================================ 
ASIC 3052_MP2 (Port5<->None)
Product Name: ESR-6670
SDRAM CAS = 3(d1835272) 
============================================ 

Please choose the operation: 
   1: Load system code to SDRAM via TFTP. 

LINUX started...
init started: BusyBox v1.7.5 (2010-01-11 10:07:29 CST)
starting pid 152, tty '/dev/console': '/sbin/config_init'
Config Init version: 1.1.0.159 date: 2010/01/11
starting pid 209, tty '/dev/ttyS1': '/sbin/config_term'
************************************************************************
*                                 ESR-6670                             *
************************************************************************

KernelApp/Ramdisk Ver:1.1.0.159			 Date:2010/01/11
console> cat: can't open '/apps/lib/modules/2.6.21/modulesApp.dep': No such file or directory
ln: /sbin/./apps_init: File exists

unfortunatelly I have not found any way to interact with the device on the serial port. Hitting 1 does not effect anything, and in the console prompt I have not find any working command. Hitting Ctrl+C kills the console, –so the communication to the device works too on the serial line– but it starts again:

process '/sbin/config_term' (pid 209) exited. Scheduling it for restart.
starting pid 460, tty '/dev/ttyS1': '/sbin/config_term'