⚠
Attention
Do not disconnect the device from the power supply while
transferring the firmware into the internal memory. This
could damage the device.
6.4.3 Activate alternative firmware image
If, after changing the active firmware, unexpected problems
occur, you can manually activate the other firmware image
on the device. To do that you will need:
A ballpoint pen
⚠
Attention
Do not use a pencil for a manual reset, as its lead could
break and damage the device.
1.
Disconnect the device from the power supply.
2.
Press the reset button using the ballpoint pen. You find
the button underneath the opening next to the status
LED.
3.
Hold the button while you reconnect Querx TH to the
power supply. The device starts blinking. After a couple of
seconds the blinking stops and status LED lights red.
4.
Now release the button. The alternate firmware image is
written into the internal memory and Querx TH reboots.
⚠
Attention
After the activation, please wait until the device has
rebooted before you disconnect it from the power supply.
If disconnected during the transfer process, the device
could be damaged.
6.5 Change the battery
To enable the internal clock to operate without power
supply, Querx TH is equipped with a battery. If its charge has
Maintenance, tips and troubleshooting
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