Edimax 3G-6200N
- Supported Versions
- Hardware Highlights
- Installation
  - Notes
- Hardware
  - Details
  - Serial
- Buttons
- Compilation From Trunk
- To Do
- Links
- Tags

Edimax 3G-6200N

This device is NOT RECOMMENDED for future use with OpenWrt due to low flash/ram.
DO NOT BUY DEVICES WITH 4MB FLASH / 32MB RAM if you intend to flash an up-to-date and secure OpenWrt version onto it! See 4/32 warning for details.

1) This device does not have sufficient resources (flash and/or RAM) to provide secure and reliable operation.
This means that even setting a password or changing simple network settings might not be possible any more, rendering the device effectively useless. See OpenWrt on 4/32 devices what you can do now.

2) OpenWrt support for this device has ended in 2022.
19.07.10 was the last official build for 4/32 devices.

Supported Versions

Tested with trunk r32682 openwrt firmware image.

Usb, wifi, lan, all seem to work.

This device is very similar to Dovado 3GN, Same board, cpu.

!! WARNING !! Since trunk rev 33300, all lan ports including wan port acts as a dumb switch. There is no NAT. This is not yet fixed and it is related to swich functionality which was added from rev 33300. Everything is working good up to rev. 33298. So remember to compile your own working image.
The bug might be fixed in r34379 as claimed in 12125. A working (but maybe older) firmware from this thread. This is an outdated howto.

Hardware Highlights

Installation

→ Install OpenWrt (generic explanation)

NOTE: This method was tested on firmware 2.21b available at Edimax Poland:

Enable telnet server
- Log in to www interface, lets assume it is at address http://router
- In address bar go to hidden sub-page: http://router/syscmd.asp
- In input box enter:
```
/usr/sbin/telnetd -l /bin/ash
```
- Test if telnet server is working: telnet to the router
- Note: this hack may not work on all firmware versions, I have tested it successfully on 2.21b. (Does not work on 2.22f, 2.24g and 2.26c: A link to busybox exists, but busybox was compiled without this plugin).
Download flash files to router and start flashing process
- Statically compiled “mtd” programm can be downloaded from this link http://dl.dropbox.com/u/7157357/My-files/mtd
- Firmware file available here http://dl.dropbox.com/u/7157357/My-files/openwrt-ramips-rt305x-3g-6200n-squashfs-sysupgrade.bin
- ```
cd /tmp
wget .../openwrt-ramips-rt305x-3g-6200n-squashfs-sysupgrade.bin
wget .../mtd
chmod a+x mtd
./mtd -r write openwrt-ramips-rt305x-3g-6200n-squashfs-sysupgrade.bin Kernel:RootFS
```
connect to and configure your device: 192.168.1.1, the luci interface should show up

Notes

In case of problems it should be possible to flash back to original firmware via tftp firmware restore method.

Unplug power from Edimax
Press Wps/Reset button, and hold it while plugging in power

Manually set IP address on your PC.

  IP Address: 192.168.1.2
  Netmask: 255.255.255.0
  Gateway: 192.168.1.1

download tftp utility http://philippe.jounin.pagesperso-orange.fr/tftpd32.html, and send original firmware file to 192.168.1.6
- make sure you use binary mode (using text mode may result in infinite slow flashing of wifi led)
- perhaps waiting 5-10 minutes after firmware upload would be sufficient for it to flash
after flash you may see your settings from prior OpenWrt installation restored

Hardware

Details

Architecture	RAMIPS
Vendor	RALINK
Bootloader	U-Boot
System-On-Chip	RT3050F
CPU Speed	320MHz
Flash-Chip	MX29LV320T
Flash size	4MiB
RAM	32MiB
Wireless	802.11n (B/G/N)
Ethernet	10/100
USB	Yes
Serial	Yes
JTAG	No

Serial

BAUD RATE	BITS	PARITY	FLOW CONTROL
57600	8	N	none

Buttons

To be able to control Wi-Fi with wlan on/off switch which is located next to antenna port, you have to make two scripts and put them into /etc/hotplug.d/button folder.

mkdir /etc/hotplug.d/button
cd /etc/hotplug.d/button
touch 00-wlan

Put this script into 00-wlan (this script switches WIFI ON):

if [ "$ACTION" = "pressed" ]; then
   if [ "$BUTTON" = "BTN_0" ]; then
    uci set wireless.@wifi-device[0].disabled=0 && uci commit && wifi up   
   fi
fi

Now make the second script:

touch 01-wlan

Put this script into 01-wlan (this script switches WIFI OFF):

if [ "$ACTION" = "released" ]; then
  if [ "$BUTTON" = "BTN_0" ]; then
  uci set wireless.@wifi-device[0].disabled=1 && uci commit && wifi down
  fi
fi

Now you can switch wifi on/off with the wlan switch :)

Compilation From Trunk

Device is suported in Trunk since 32682

svn co svn://svn.openwrt.org/openwrt/trunk/
cd trunk
make menuconfig

Select “Target System” as (Ralink RT288x/RT3xxx)
Select “Subtarget” as (RT305x based boards)
Select “Target Profile” as (Default Profile)
Exit, and save.
Type:

make

After compilation the firmware file is in /bin/ramips/ folder named as “openwrt-ramips-rt305x-3g-6200n-squashfs-sysupgrade.bin”

To Do

~~Ap-client (STA mode) doesn't work~~ WORKS !
Failsafe not working...WIP
Find the way to flash the openwrt firmware from original edimax web interface
multi-ssid: ap only might work, for sta/ap setup perhaps https://dev.openwrt.org/ticket/12133

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