is a portable router with battery.

• Ralink RT5350 id:1 rev:3 (360 MHz)
• 32 MB RAM
• 8 MB Flash
• 802.11bgn 1T1R
• 1x internal, non-detachable antenna
• 1x 10/100 Mbps Ethernet
• 1x USB 2.0 (Type-A)
• 5 leds
• 2 buttons
• UART header on PCB (57600 8n1)
• JBOOT bootloader
• 1700 - 2200 mAh battery (Fujifilm NP-120 / Pentax D-Li7, D-L17, DB-43)

• 2@gpio0: reset - KEY_RESTART (GPIO_ACTIVE_LOW)
• 7@gpio0: wps - KEY_WPS_BUTTON (GPIO_ACTIVE_LOW)
• 10@gpio0: low_battery - BTN_0 (GPIO_ACTIVE_HIGH)
• 11@gpio0: charging - BTN_1 (GPIO_ACTIVE_HIGH)
• 12@gpio0: on_battery - BTN_2 (GPIO_ACTIVE_HIGH)

• 9@gpio0: led green:usb (GPIO_ACTIVE_LOW)
• 18@gpio0: usb port power (GPIO_ACTIVE_HIGH)
• 19@gpio0: led green:status (GPIO_ACTIVE_HIGH)
• 0@gpio1: led green:internet (GPIO_ACTIVE_HIGH)
• 1@gpio1: led red:status (GPIO_ACTIVE_HIGH)

With Huawei E3272 + 1 WiFi connection

• 240mA IDLE
• 600+mA at download speed 5mbps

Uptime: ~4 hours with 3 connected clients.

To allow work without battery add resistor 15-16kOmh

• upgrade from stock f/w via WebUI
• all LEDs available
• all buttons work
• battery/charger GPIO events added
• USB power on by default
• keep JBOOT recovery

Apply factory image via http web-gui or JBOOT recovery page

DIR-506L
github.com

Upgrade may hang, at least then WebUI used.
Workaround: stop unbound and dnsmasq before upload f/w to release memory.

Happen then internal switch exist and disabled.

NETDEV WATCHDOG: eth0 (mtk_soc_eth): transmit queue 0 timed out

https://forum.openwrt.org/t/mtk-soc-eth-watchdog-timeout-after-r11573/50000/377
https://github.com/openwrt/openwrt/issues/8660
Workaround: unplug net cable untill device started
Workaround: remove switch from existing configuration or build f/w without defined switch in 02_network and reset config on/after update

• push the reset button and turn on the power. Wait until LED start blinking (~10sec.)
• upload original factory image via JBOOT http (IP: 192.168.123.254)

If http doesn't work, it can be done with curl command:

curl -F FN=@XXXXX.bin http://192.168.123.254/upg

where XXXXX.bin is name of firmware file.