Independent wallet support

Coldcard PSBT Signing Problem? SD Card Help

Use this Coldcard PSBT signing page when unsigned transaction files will not load, signed PSBT files are missing, SD card transfer fails, or broadcast does not complete.

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Independent wallet security guidance. This site is not Coldcard.

Coldcard help topics

Wallet security

Quick issue summary

Ledger and Trezor support teams should never ask for a recovery phrase, seed phrase, private key, or remote access to a wallet.

Recently Reported Issues

Wallet users recently reported phishing attempts involving fake firmware update pages.
Some users recently reported zero-balance displays after restore, network changes, or passphrase confusion.
Others recently reported fake support accounts asking for recovery phrases or remote access.

Coldcard wallet guidance

A Coldcard PSBT signing problem is usually caused by wrong PSBT file direction, SD card format or placement, wallet account mismatch, passphrase context, firmware state, transaction review rejection, or signed-file import failure.

Common wallet topics include Coldcard PSBT signing problem, SD card signing issue, unsigned PSBT not loading, signed PSBT not found, broadcast issue, Bitcoin transaction signing error, or fake signing support request.

Never share your recovery phrase, seed phrase, private keys, or PIN.

Wallet topics

Common Coldcard Help Topics

Coldcard not connecting

If PSBT issues look like a connection problem, separate USB and air-gapped paths.

Open

Coldcard wallet not detected

If the wallet app cannot use the exported wallet context, troubleshoot detection.

Open

Coldcard balance not showing

If the signing wallet has the wrong coins or account, check balance context.

Open

Coldcard firmware update problem

Firmware state can affect PSBT and SD card workflow readiness.

Open

Coldcard support hub

Return to Coldcard support for PSBT, SD card, and recovery help.

Open

Report this PSBT issue

Report non-private PSBT and SD card symptoms to PhraseWallet.

Open

Coldcard / Bitcoin wallet app Troubleshooting Checks

Coldcard / Bitcoin wallet app troubleshooting is safest when you separate display, sync, device, firmware, and recovery phrase concerns before changing wallet settings. Use official Coldcard support links for device-specific instructions.

Unsigned PSBT

Signed PSBT

SD card transfer

Device approval

Broadcast step

Coldcard Troubleshooting Checks

Use these checks to separate ordinary setup friction from wallet safety risk before you reset, restore, reinstall, or open wallet support portals.

PSBT direction

Separate unsigned PSBT export, Coldcard signing, signed PSBT import, and Bitcoin broadcast. Importing the wrong file makes signing look broken.

SD card handling

Card format, file location, filename, adapter reliability, and stale files can all interrupt an air-gapped signing or firmware workflow.

Bitcoin wallet context

Missing balances can come from xpub, script type, derivation path, account index, gap limit, wallet sync, or passphrase context.

Firmware source

Use verified official Coldcard firmware paths. Fake downloads and support pages may ask for seed words to complete a fake update.

Recovery phrase handling

Keep seed words offline and private. Do not photograph them, paste them into support, or use a validation page from an ad or message.

Transaction review

Read the Coldcard screen before signing. Reject unexpected destination, fee, coin selection, change address, or account context.

Likely Causes

Start with the most common causes before resetting the wallet, restoring from a recovery phrase, or trusting a support message.

The unsigned PSBT was not exported from the same wallet/account context that Coldcard expects

The microSD card format, file location, filename, or adapter is causing read/write problems

The signed PSBT file was created but imported into the wrong wallet app view or broadcast step

The transaction details on the device were rejected or did not match the user's intent

Passphrase, derivation path, script type, or xpub context does not match the wallet trying to sign

Firmware or wallet software state changed and needs a controlled retest

A phishing page is asking for seed words or an unsafe signature while posing as support

Recovery And Troubleshooting Steps

Step 1

Confirm PSBT direction

Export unsigned PSBT from the Bitcoin wallet app to the card, sign it on Coldcard after reviewing details, then import the signed PSBT back into the wallet app for broadcast.

Step 2

Check SD card handling

Use compatible media, keep the file in the expected location, avoid mixing old PSBTs, and confirm the signed output file is the one imported.

Step 3

Review transaction details

Reject the request if destination, amount, fee, coin selection, change address, or account context does not match your intent.

Step 4

Match wallet context

Verify xpub, passphrase, script type, account index, and derivation path before repeating signing attempts.

Coldcard / Bitcoin wallet app And Device-Specific Help

Bitcoin wallet app

Check the active wallet, selected UTXOs, unsigned PSBT export, signed PSBT import, broadcast status, and error text.

Coldcard device

Confirm the device is unlocked, reading the intended PSBT, and showing transaction details that match the wallet app.

Firmware and SD card

If signing broke after an update or card change, retest firmware source, card format, and a small non-urgent transaction path.

Coldcard Official Support Checklist

For official Coldcard help, downloads, updates, or contact options, use Coldcard's official portal and verified official channels. This page helps you prepare safe, non-private context before opening support portals.

Device model

Coldcard / Bitcoin wallet app version if known

Issue type

Screenshots without private info

Never include recovery phrase

Never include private keys

Coldcard Recovery Phrase Safety

No legitimate wallet guidance should need your recovery phrase.

A recovery phrase controls wallet restoration. Treat it as private self-custody information and review how phrases work before using any wallet.

Recovery Phrase Help What Is a Recovery Phrase?12 vs 24 Word Phrase

Report wallet issue

Describe Your Wallet Problem

Submit a non-secret wallet problem for moderated review and safer routing. PhraseWallet is independent and this is not official wallet support or emergency recovery assistance.

Never enter your recovery phrase, private key, password, PIN, or payment details.

Reports are reviewed before use and should include only device, app, country, and issue context.

FAQ

Common Coldcard Help Questions

Why will Coldcard not sign my PSBT?+

Common causes include wrong wallet context, passphrase mismatch, unsupported or stale PSBT file, SD card issue, derivation mismatch, firmware state, or rejected transaction details.

Where is the signed PSBT file?+

It is usually written back to the SD card after device approval. Import the signed output file, not the original unsigned PSBT, into the wallet app.

Should I approve a PSBT I do not recognize?+

No. Reject unexpected destinations, amounts, fees, change details, or account context and investigate before trying again.

Can PSBT troubleshooting require my seed phrase?+

No. PSBT signing help should not require sharing seed words, private keys, PIN, passphrase, or remote access.