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releases/ChangeLog.md
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This lists the changes in the most recent firmware, for each hardware platform.
# Shared Improvements - Both Mk4 and Q
# Shared Improvements - Both Mk and Q
- Enhancement: Address format guessing changed away from using PSBT XPUB's derivation paths.
Now based on witness/redeem script of first PSBT input instead.
- Enhancement: Show master XFP of backup secret and ask user for confirmation before loading backup.
- Enhancement: Show firmware version added to hobbled Advanced/Tools menu.
- Bugfix: Exiting text input of Custom Backup Password caused yikes.
- Bugfix: Temporary seeds in SSSP mode were not able to update block height.
- New Feature: Sign [BIP-322](https://github.com/bitcoin/bips/blob/master/bip-0322.mediawiki) Proof of Reserve PSBT files.
- Requires a carefully crafted PSBT that does not represent a monetary transaction, but instead is demonstrating
control over the keys for a list of UTXO, and commits to a short text message.
- Read more [here](https://github.com/Coldcard/firmware/blob/master/docs/proof-of-reserves-bip-322.md).
- New Feature: WIF Store. Ability to import foreign WIF keys (Wallet Import Format) and use them for PSBT signing.
- New Feature: Export [BIP-380](https://github.com/bitcoin/bips/blob/master/bip-0380.mediawiki) extended key expression.
Navigate to "Advanced/Tools -> Export Wallet -> Key Expression"
- New Feature: Transaction Input Explorer. Shows data about UTXO(s) being spent. Press (2) before approving
transaction to enter Transaction Explorer.
- New Feature: Support for v3 transactions in PSBT files.
- New Feature: Option to type a derived BIP-85 secret as an emulated USB keyboard.
- New Feature: Nuke Device: purges all sensitive data and makes your COLDCARD e-waste.
- Enhancement: CCC debug menu allows you to reset block height.
- Enhancement: Show the BIP-39 passphrase on-screen (must scroll down) once new key is in effect.
- Enhancement: New "Buried Settings" menu, inside Settings menu, for rarely-applied settings.
- Enhancement: Add "Blue Wallet" option to "Export Wallet"
- Enhancement: Detect duplicated inputs in PSBT file.
- Bugfix: Replace `/` with `-` in exported file names of multisig wallet export artifacts.
# Mk4 Specific Changes
# Mk Specific Changes
## 5.4.5 - 2025-11-03
## 5.5.0 - 2065-03-05
- None.
- Enhancement: Show QR of XOR-split seeds.
# Q Specific Changes
## 1.3.5Q - 2025-11-03
## 1.4.0Q - 2065-03-05
- Enhancement: Show backup filename at the top of the screen during backup password entry.
- Bugfix: Empty notes in hobbled mode caused yikes upon menu entry.

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releases/History-Mk4.md
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*See ChangeLog.md for more recent changes, these are historic versions*
## 5.4.5 - 2025-11-03
- Enhancement: Address format guessing changed away from using PSBT XPUB's derivation paths.
Now based on witness/redeem script of first PSBT input instead.
- Enhancement: Show master XFP of backup secret and ask user for confirmation before loading backup.
- Enhancement: Show firmware version added to hobbled Advanced/Tools menu.
- Bugfix: Exiting text input of Custom Backup Password caused yikes.
- Bugfix: Temporary seeds in SSSP mode were not able to update block height.
## 5.4.4 - 2025-09-30
- Spending policies for "Single Signers" adds new spending policy options:

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releases/History-Q.md
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*See ChangeLog.md for more recent changes, these are historic versions*
## 1.3.5Q - 2025-11-03
- Enhancement: Address format guessing changed away from using PSBT XPUB's derivation paths.
Now based on witness/redeem script of first PSBT input instead.
- Enhancement: Show master XFP of backup secret and ask user for confirmation before loading backup.
- Enhancement: Show firmware version added to hobbled Advanced/Tools menu.
- Bugfix: Exiting text input of Custom Backup Password caused yikes.
- Bugfix: Temporary seeds in SSSP mode were not able to update block height.
- Enhancement: Show backup filename at the top of the screen during backup password entry.
## 1.3.4Q - 2025-09-30
- Spending policies for "Single Signers" adds new spending policy options:

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releases/Next-ChangeLog.md
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# Shared Improvements - Both Mk and Q
- New Feature: Sign [BIP-322](https://github.com/bitcoin/bips/blob/master/bip-0322.mediawiki) Proof of Reserve PSBT files.
- Requires a carefully crafted PSBT that does not represent a monetary transaction, but instead is demonstrating
control over the keys for a list of UTXO, and commits to a short text message.
- Read more [here](https://github.com/Coldcard/firmware/blob/master/docs/proof-of-reserves-bip-322.md).
- New Feature: WIF Store. Ability to import foreign WIF keys (Wallet Import Format) and use them for PSBT signing.
- New Feature: Export [BIP-380](https://github.com/bitcoin/bips/blob/master/bip-0380.mediawiki) extended key expression.
Navigate to "Advanced/Tools -> Export Wallet -> Key Expression"
- New Feature: Transaction Input Explorer. Shows data about UTXO(s) being spent. Press (2) before approving
transaction to enter Transaction Explorer.
- New Feature: Support for v3 transactions in PSBT files.
- New Feature: Option to type a derived BIP-85 secret as an emulated USB keyboard.
- New Feature: Nuke Device: purges all sensitive data and makes your COLDCARD e-waste.
- Enhancement: CCC debug menu allows you to reset block height.
- Enhancement: Show the BIP-39 passphrase on-screen (must scroll down) once new key is in effect.
- Enhancement: New "Buried Settings" menu, inside Settings menu, for rarely-applied settings.
- Enhancement: Add "Blue Wallet" option to "Export Wallet"
- Enhancement: Detect duplicated inputs in PSBT file.
- Bugfix: Replace `/` with `-` in exported file names of multisig wallet export artifacts.
- tbd
# Mk Specific Changes
## 5.5.0 - 2065-03-05
## 5.5.x - 2065-04-xx
- Enhancement: Show QR of XOR-split seeds.
- tbd
# Q Specific Changes
## 1.4.0Q - 2065-03-05
## 1.4.xQ - 2065-04-xx
- Bugfix: Empty notes in hobbled mode caused yikes upon menu entry.
- tbd