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11 Device Recovery
The following section describes available options for recovery of malfunctioning device. Usually device can
become unreachable due to power failure during firmware upgrade or if its core files were wrongly modified in the file
system. Teltonika’s routers offer several options for recovering from these situations.
11.1 Reset button
Reset button is located on the back panel of the device. Reset button has several functions:
Reboot the device. After the device has started and if the reset button is pressed for up to 4 seconds the device
will reboot. Start of the reboot will be indicated by flashing of all 5 signal strength LEDs together with green connection
status LED.
Reset to defaults. After the device has started if the reset button is pressed for at least 5 seconds the device will
reset all user changes to factory defaults and reboot. To help user to determine how long the reset button should be
pressed, signal strength LEDs indicates the elapsed time. All 5 lit LEDs means that 5 seconds have passed and reset
button can be released. Start of the reset to defaults will be indicated by flashing of all 5 signal strength LEDs together
with red connection status LED. SIM PIN on the main SIM card is the only user parameter that is kept after reset to
defaults.
11.2 Bootloader’s WebUI
Bootloader also provides a way to recover the router functionality when the firmware is damaged. To make it
easier to use bootloader has its own webserver that can be accessed with any web browser.
Procedure for starting bootloader’s webserver:
Automatically. It happens when bootloader does not detect master firmware. Flashing all 4 Ethernet LEDs
indicate that bootloader’s webserver has started.
Manually. Bootloader’s webserver can be requested by holding reset button for 3 seconds while powering the
device on. Flashing all 4 Ethernet LEDs indicates that bootloader’s webserver has started.
Bootloader’s WebUI can be accessed by typing this address in the web browser:
http://192.168.1.1/index.html
Note: it may be necessary to clear web browser’s cache and to use incognito/anonymous window to access
bootloader’s WebUI.
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