A corrupted µFR Nano Online firmware recovery – desktop app #
If you are experiencing a problem with a corrupted firmware of your µFR Nano Online device, and it cannot be connected to your network, or for some other reason you cannot access its web backend configuration in your browser, you need to recover the device using the desktop tools.
Windows desktop tools – µFR Nano Online firmware recovery #
Plug the device into your Windows machine USB port and make sure your FTDI drivers are running properly.
As you are probably already aware, the µFR Nano Online device consists of the two joined hardware, uFR Nano and ESP32, both having individual firmware. Therefore, one firmware flashing tool may not recover the entire device. It is most likely that the device’s ESP32 firmware failed. The console flasher can flash the uFR Nano reader of the device, but you first need to fix the ESP32 with the following ufr_online-flasher-oneclick tool (explained at https://www.d-logic.com/nfc-rfid-reader-sdk/software/ufr-online-flasher/).
In case you have trouble detecting the device on the Windows machine, make sure you meet the following conditions:
– The device is plugged directly into the host machine USB port (not into the external power supply)
– Download the uFR Online Flasher
– Run the tool and select the port to which the Online device is connected
– If some error occurs, make sure you have no additional FTDI devices attached to this Windows machine. Also, make sure that your desktop device is connected to the internet (this is necessary in order to access the remote firmware releases repository)
– Click the Reset To Factory Defaults button to clear the custom settings that may be causing some conflicts
– Select the desired firmware version from the dropdown list and click the Install Firmware button (the latest FW version is recommended, but you can try with any of the previous versions, preferably the one you’ve been using when the device worked stable)
– DO NOT use the OEM Unlock option not even for testing because it can make the device recovery more difficult and eventually permanently damage the device!
If this all goes well, you can further connect the device to the network and use its use web backend configuration to update the µFR reader firmware and configure the device as desired.
