ERA User Guide

Device settings and firmware updates

Set the device clock

You will haveThe device clock is set from the app over NFC, so your 2FA codes are correct.
Time2 min
You needERA device, ERA companion app, phone with NFC

ERA has no clock setting under SETTINGS. The clock is set by the app over NFC, and the device asks for it only where it matters: on the 2FA screen, because one-time codes (TOTP) are computed from the time. The reminder appears only when the clock is not set and at least one code is saved.

Steps

  1. On the main menu, tap 2FA.

    2FA TOTP list, here empty with No codes yet
    2FA TOTP list, here empty with No codes yet

  2. On the 2FA TOTP list, a reminder reads The device clock is not set, so TOTP codes do not work. Tap UPDATE.

    Image coming soon — ERA screen — the 2FA list with the clock reminder panel and its UPDATE / SKIP buttons, after adding one TOTP account on a device whose clock was never set

  3. Keep ERA on the DEVICE TIME page. It lists the steps and waits about 30 seconds for the phone.

    Image coming soon — ERA screen — DEVICE TIME page with the four numbered steps and the NFC wave animation

  4. On your phone, open the app.

  5. In the app, tap Settings > Update device time. Any other NFC session sets the clock too.

    9:41
    Settings page of the app: General section, then Device settings with Update wallet, Authenticity Check, Verify app and Update device time.
    Phone: Settings, with Update device time under Device settings.

  6. The app shows Hold the wallet to the phone.

    9:41
    Bottom sheet over Settings: Hold the wallet to the phone — Unlock your ERA wallet and hold it flat against the back of the phone, with a spinner.
    Phone: Hold the wallet to the phone.

  7. Hold the phone against the lower half of the front of the device until the page closes.

    Phone held face-up over the ERA with its top edge across the lower half of the device front
    Photo: The phone's top edge over the lower half of the ERA — the same position as for any NFC session (here a firmware update).

Done

The 2FA list shows live codes and the reminder is gone.

Note: The device also takes the time from the phone during any other NFC session, for example a firmware update or a TapSign transaction, so the clock is usually set before you ever see the reminder.

Trouble?

  • The DEVICE TIME page closes and the reminder is still there → nothing arrived within 30 seconds; move the phone lower on the device and try again.

  • Codes are still rejected by the website → the phone's own clock is wrong; enable automatic time on the phone, then repeat.

  • The reminder says the clock has not been synced for a long time → repeat the steps in this guide; codes may drift after months without a sync.