A corrupted µFR Nano Online firmware diagnostic and recovery – web backend #
– µFR Reader Firmware Issue – #
This device has two pairs of LEDs. The top LEDs are connected to the ESP32 board and show the network connection status, while the bottom pair of LEDs are connected to the NFC reader. The bottom LEDs should flash green (slowly when there is no card near, and fast when you read the card). If you see any red light at the bottom or no light at all, then the µFR reader firmware is missing or corrupted.
If you still can access your device’s web backend, please log in and check the device info as shown below:
The red-marked fields contain the NFC reader firmware details.
If you have no firmware data listed here, or if both, the reader serial and the firmware version are missing, the firmware of your device is corrupted.
In this case, you can try resting the device on the factory settings. Then connect the device to your network again and flash both firmware again.
Whatever firmware version your device has, it is recommended to upgrade to the latest release.
This should recover all the device functionality.
Make sure you start with the ESP32 firmware first.
The version list will appear by clicking the “Check for updates” button.
On a drop-down list, select the latest firmware version.
Wait until you got the success message.
Then, go to the bottom of the settings page (“Other settings” menu bottom), and open the NFC reader firmware list.
Again select the latest available version and flash the device.
This process should take a while and the device should flash red fast. Make sure you don’t interrupt this process since that might result in the firmware failure again.
If any error occurs, please contact our technical support team.
