3.18.23 image, update by USB

For USB rescue

base_image_0.94_3.18.23/lks7688.img
dffa59d1650497662b7ea53ca41701bd
This image seems be factory image for Linkit 7688 / 7688 Duo.
This version is fully supportted by opkg, https://archive.openwrt.org/chaos_calmer/15.05.1/ramips/mt7688/.
救磚

Caution

copy lks7688.img to a clean usb disk with FAT32 format.

First boot, please wait 2minutes or run command of sync to wait all works is finished.

Press WiFi key and power on linkit7688

After 10 sec and release WiFi ky, linkit7688 finds the USB disk, file, and update itself.

Conneting type 2

Conneting type 3

3.18.23 image, update by mtd

mtd_update_3.18.23/LinkIt_Smart_7688_Firmware_v0.9.4.zip
extract and copy the lks7688.img to USB disk.

Boot linkut7688 to linux

Update by :

mtd -r write /tmp/run/mounted/sd1/lks7688.img firmware

Thus, if you want use this image, you maybe need to update 3.18.109 by USB or you board is ok for booting to linux,

then update this image by command of mtd.

linkit7688_3.18.109 image

usb_update_3.18.109/lks7688.img
For USB rescue

linkit7688duo MCU rescue

You can find Caterina-smart7688.hex at arduino for linkit7688duo:
C:\Users\greatcat\AppData\Roaming\Arduino15\packages\LinkIt\hardware\avr\0.1.8\bootloaders\caterina

copy Caterina-smart7688.hex to linkit7688duo by scp
and run the command as below:
avrdude -p m32u4 -c linuxgpio -v -e -U flash:w:Caterina-smart7688.hex -U lock:w:0x0f:m

example of uci

ONLY for owrt=15.x / k=3.18.x

Setting of WiFi sta mode (WiFi to ethernet router)

uci set dhcp.lan.ignore='0' &&\
uci set network.lan.proto='static' &&\
uci set wireless.radio0.linkit_mode='' &&\
uci set wireless.ap.ssid='xxxxxxxxx' &&\
uci set wireless.ap.key='xxxxxxxxx' &&\
uci set wireless.ap.encryption='' &&\
uci set wireless.sta.disable=0 &&\
uci set wireless.sta.network='wan' &&\
uci set wireless.sta.ssid=greatcat3 &&\
uci set wireless.sta.key=123456789 &&\
uci set wireless.sta.encryption=psk2 &&\
uci commit

wifi_mode sta

Mt7688 as ethernet bridge. Browser -> PC -> ethernet -> mt7688 -> WiFi -> phone

Setting of WiFi AP mode

uci set dhcp.lan.ignore='0' &&\
uci set network.lan.proto='static' &&\
uci set wireless.radio0.linkit_mode='ap' &&\
uci set wireless.ap.ssid='LinkIt_Smart_7688_1C1497a' &&\
uci set wireless.ap.key='123456aaa' &&\
uci set wireless.ap.encryption='psk2' &&\
uci set wireless.sta.disable=1 &&\
uci set wireless.sta.network='' &&\
uci set wireless.sta.ssid='xxxxxxxxx' &&\
uci set wireless.sta.key='xxxxxxxxx' &&\
uci set wireless.sta.encryption='psk2' &&\
uci commit

wifi_mode ap

Setting of WiFi router mode

uci set network.lan.type='' &&\
uci set dhcp.lan.ra_management='1' &&\
uci set network.lan._orig_ifname='ra0' &&\
uci set network.lan._orig_bridge='false' &&\
uci set network.lan.ifname='ra0' &&\
uci commit &&\
sleep 3 &&\
/etc/init.d/network restart

uci set network.wan._orig_ifname='eth0' &&\
uci set network.wan._orig_bridge='false' &&\
uci set network.wan.ifname='eth0' &&\
uci commit &&\
sleep 3 &&\
/etc/init.d/network restart


MT7688 Ethernet is DHCP client mode.
MT7688 WiFi is AP mode and DHCP server mode.
PC#inside is able to ping PC#outside 192.168.123.121
PC#outside is able to ping mt7688 192.168.123.178

If the document help you, how about buy street cats a fish can ?