How to use Ledger Sync across devices? (Cloud Backup)

Setting Up Ledger Live Cloud Sync

1. Install Ledger Live desktop application from the official Ledger website and launch it on your primary device.

2. Connect your Ledger hardware wallet (Nano X, Nano S Plus, Stax, or Flex) via USB or Bluetooth and unlock it using the device PIN.

3. In Ledger Live, go to Settings > Security > Enable “Cloud Sync” toggle — this initiates encrypted synchronization of transaction history and account metadata.

4. Sign in with your Ledger ID (email + password), which is distinct from your 24-word recovery phrase and never stored on Ledger’s servers.

5. Confirm cloud sync activation by reviewing the encryption warning: all synced data is end-to-end encrypted using keys derived solely from your Ledger ID credentials.

Device Pairing and Cross-Platform Consistency

1. On a second device — whether macOS, Windows, Linux, or iOS — install Ledger Live and sign in using the same Ledger ID.

2. Upon first login, Ledger Live automatically fetches the encrypted sync bundle and decrypts it locally using your session key.

3. Account balances, transaction labels, custom token names, and portfolio grouping settings appear identical across devices within seconds.

4. Hardware wallet interaction remains strictly local: no private keys, signatures, or derivation paths ever leave your physical device during sync.

5. Each device maintains its own cache of blockchain data; only user-facing metadata and confirmed transaction records are synchronized.

Encryption Architecture Behind Cloud Sync

1. Ledger employs AES-256-GCM encryption for all payload data before upload to AWS S3 storage buckets hosted in EU regions.

2. The decryption key is never transmitted — it is deterministically generated client-side from your Ledger ID password and a salt retrieved during authentication.

3. No plaintext identifiers — such as wallet addresses, transaction hashes, or asset tickers — are stored in unencrypted form on remote infrastructure.

4. Session tokens expire after 90 days of inactivity and require re-authentication with two-factor verification if enabled.

5. Ledger does not retain logs linking IP addresses or device fingerprints to specific Ledger ID sessions beyond 7 days for security monitoring purposes.

Recovery Scenarios Without Physical Device Access

1. If your Ledger hardware wallet is lost or damaged, you can still view historical balances and transaction timelines via Ledger Live Cloud Sync — provided your Ledger ID remains accessible.

2. Exportable reports include CSV exports of all confirmed transactions, categorized by date, asset type, and counterparty address.

3. Labels applied to addresses or transactions on one device propagate instantly to others, preserving organizational context across environments.

4. Unconfirmed transactions or pending staking rewards do not appear in cloud sync — only finalized, on-chain-confirmed entries are included.

5. Deactivating Cloud Sync from any signed-in device immediately revokes access tokens and purges cached metadata from that endpoint.

Frequently Asked Questions

Q1. Does enabling Cloud Sync expose my private keys?No. Private keys remain exclusively inside your Ledger device. Cloud Sync only handles encrypted metadata — never cryptographic material.

Q2. Can I use Cloud Sync without a Ledger ID?No. Ledger ID is mandatory. It serves as both authentication credential and encryption key source. Anonymous usage is not supported.

Q3. Are NFT collections visible across devices via Cloud Sync?Yes. NFT ownership records, collection names, and display thumbnails synced through Ledger Live are consistent across all authenticated devices.

Q4. What happens if I change my Ledger ID password?The old encryption key becomes invalid. All previously synced data remains encrypted but inaccessible until you restore from a local backup or re-sync from your hardware wallet.