ハードウェアウォレットのPINを忘れたら？リセット前に確認すること

ハードウェアウォレットのPINを忘れると焦ります。次の操作が普通の復旧になる場合もあれば、取り返しのつかない失敗になる場合もあります。重要なのは、そのウォレットを復元できるバックアップが手元にあるかです。

短い答え

リセットしてよいのは、リカバリーフレーズ、使用している場合のパスフレーズ、または復旧サービス/キーが利用可能で確認済みの場合だけです。

シードフレーズがない、パスフレーズが不確か、焦って推測している場合のリセットは危険です。

Why the PIN is not the real backup

The PIN protects the physical device. It is not the wallet backup. A person with the device and PIN can sign transactions, but a person with only the device and no PIN is blocked. The recovery phrase or approved recovery method is what lets you rebuild access after a reset, loss, or failure.

That is why the safest first move is not to keep guessing. Stop, find the backup, confirm whether you used a passphrase, and use only the official app for the device.

Ledger: three wrong PINs erase the device

Ledger says a device can be reset from settings or by entering an incorrect PIN three times. After that, the device returns to factory settings. To get back to the same accounts, you need the Secret Recovery Phrase, Ledger Recovery Key, or Ledger Recover if it was already configured.

If you know the recovery phrase, the reset is inconvenient but manageable. If you do not know it, the wrong third attempt can turn a PIN problem into a lost-access problem.

Trezor: factory reset requires the wallet backup

Trezor's PIN-reset flow is a factory reset. The device is started in bootloader mode, erased, firmware is installed again, and the wallet is recovered from the backup. Trezor is explicit that you should have the wallet backup and passphrase, if used, before doing this.

The key point is practical: your coins are not inside the device, but the device is the thing that currently signs. Once it is wiped, the backup is the path back.

Tangem: the second card changes the answer

Tangem uses an access code rather than the same reset model as Ledger or Trezor. Tangem says a forgotten access code can be reset in the app if you have the device being reset and another linked backup device from the same wallet set. The code is stored separately on each device, so changing one card does not automatically change every card.

There is an important limit: if access-code recovery was disabled, or if all but one linked device has already been reset, Tangem says you may not be able to recover that remaining code or factory-reset the device without the current code.

What to do before you reset anything

1. Use only Ledger Live, Trezor Suite, or the official Tangem app.
2. Find the recovery phrase, Recovery Key, Recover setup, Shamir shares, or Tangem backup device.
3. Confirm whether you used a passphrase. A correct seed with the wrong passphrase opens the wrong accounts.
4. Do not enter the recovery phrase into a website, support chat, or random phone app.
5. If the wallet still unlocks on another device/card, move slowly and consider transferring funds to a fresh wallet with a verified backup before experimenting.

シードフレーズがすでになく、ウォレットがまだ開く場合は 紛失したシードフレーズ救済ガイド.

When buying a replacement makes sense

A forgotten PIN is often a sign that the wallet setup was too fragile: one device, one memory-based secret, and a backup that may or may not be usable. For larger balances, a second hardware wallet can make recovery safer because you can create a new wallet, verify the backup, and move funds without rushing.

この経験で構成を見直すなら、ウォレット比較として Ledgerレビュー, Trezorレビュー, and Tangemレビュー, を読み、バックアップは 紙と金属のシードフレーズバックアップ.

結論

A forgotten PIN is not automatically a disaster. It becomes dangerous when you reset first and look for the backup later.

The safe order is: identify the wallet type, locate the recovery method, confirm any passphrase or backup device requirement, and only then reset or recover through official software.

出典メモ

This guide is based on official Ledger support and Ledger Academy material on PIN attempts and factory reset behavior, Trezor's official PIN reset and factory reset instructions, and Tangem Help Center guidance on access-code resets and device-specific access-code behavior.