Coldcard Seed Migration: Use the Current Manufacturer Instructions
Find the official migration guidance, distinguish a firmware update from a new seed, and repair recovery instructions after a wallet change.
Use the official response for an affected seed
Read the manufacturer’s migration guide alongside its current security status. If the advisory applies to a seed that still controls funds, follow that response promptly. A firmware update alone does not repair the existing seed. This article is a navigation and planning aid, not a replacement transaction procedure for a live security incident.
Prepare without exposing the recovery material
Reach the official site directly and be cautious of unsolicited recovery offers. Do not type a seed into a website, send it to support or share a screen containing it. Establish which wallet and backup are current before taking actions such as resetting a device. Review receiving addresses on the intended hardware using the manufacturer’s process. If you are unsure about a transaction, fee, account type or migration path, get assistance through the official channel without sharing secrets.
Keep records of the change
Record the date, the new wallet’s non-secret label and the location of its recovery instructions. Keep transaction evidence in a private record where appropriate. Check for other accounts or assets tied to the old arrangement before retiring any backup. The goal is to leave one clear current plan while preserving records that still matter. Do not treat a blanket instruction to destroy all old backups as safe for every person’s situation.
Repair the human handoff
A migration can leave an executor or partner following outdated directions even after the immediate wallet problem is resolved. Update the contact they should use, the device or wallet name they should expect, and the location of the authorised recovery procedure. Explain which older instructions have been superseded. Rehearse the revised map with a harmless example and check that it makes sense to someone who did not carry out the migration.
Prepare the instructions your person would need
Keep wallet seed words and master passwords out of a general handoff message. Start with a non-secret inventory, document locations and a person to contact. ZeroLatch is an online conditional delivery service: check-ins keep a delivery on hold, and a missed deadline plus the safety period can make it eligible for release. Recipient access also depends on verification and service availability. Simple uses service-managed key recovery; Private requires a separate secret. Neither mode guarantees a financial or legal outcome.
Save the free handoff checklist, or try a fictional delivery without signup. The sample uses no real wallet data.
ZeroLatch Editorial Team
Published by ZeroLatch to explain future delivery and continuity planning. These guides are not independent reviews of our product. Read our editorial standards and corrections.
Disclaimer: The information provided in this article is for educational and informational purposes only and does not constitute legal, financial, or technical advice. ZeroLatch is a software service, not a law firm. We recommend consulting with qualified professionals regarding your specific estate planning, data privacy, and security needs.
Who would know where to begin with your wallets?
See a handoff with wallet-record locations and adviser contacts. ZeroLatch can release instructions after missed check-ins and a safety period; it does not secure wallets or transfer assets. Keep recovery secrets separately.
Write my instructions →Start a free draft without an account or card. Use harmless information. See the example first.