Firmware Update Session — Page Ashfield

Overview

A single-session firmware update for Ledger, Trezor, or Coldcard devices. We verify your backup materials before any update, perform the manufacturer-recommended upgrade path, and confirm signing and address display after completion.

Included

Pre-update backup checklist review
Firmware download integrity check
On-device update with you present
Post-update address verification against your records
Written session summary for your maintenance ledger

Excluded

Device repair for hardware faults, passphrase recovery, and custom firmware or third-party bootloader modifications.

Walk-in availability

Tuesday and Thursday afternoons at our Gwangju desk, subject to technician availability. Appointment recommended for multiple devices.