There are a couple of ways to reset the µFR Nano Online device:
1. Physically connect the device via USB and reset it to factory defaults using the following software tool: https://www.d-logic.com/code/nfc-rfid-reader-sdk/ufr_online-flasher-oneclick
Once the device is reset to factory settings, it will be in Access Point mode and you will be able to connect to it via WiFi SSID ON1XXXXX.
Video demo: https://www.d-logic.com/nfc-rfid-reader-sdk/software/ufr-online-flasher/
2. When you move the device away from WiFi 1, it will try connecting to the same network for 30 seconds by default.
After this, it will go into Access Point mode for 120 seconds. During this time, you will be able to access the device via WiFi SSID ON1XXXXX.
On the device frontend, you can change the default timeouts:
3. Nano Online can be configured using an NFC tag (NTAG213, NTAG215, or NTAG216) with WiFi connect NDEF message.
NDEF software: https://www.d-logic.com/code/ufr_nfc_tools/ufr-ndef-examples
When the device is in Access Point mode, simply scan the NFC tag.