{"id":7594,"date":"2025-10-20T10:11:26","date_gmt":"2025-10-20T03:11:26","guid":{"rendered":"https:\/\/bitcoinvn.io\/shop\/?p=7594"},"modified":"2025-10-20T10:11:26","modified_gmt":"2025-10-20T03:11:26","slug":"coldcard-firmware-release","status":"publish","type":"post","link":"https:\/\/bitcoinvn.io\/shop\/coldcard-firmware-release\/","title":{"rendered":"COLDCARD Firmware Release 1.3.4Q &#038; 5.4.4Mk4: Comprehensive Security Upgrade"},"content":{"rendered":"<p><i><span style=\"font-weight: 400;\">COLDCARD has officially launched new Firmware for the ColdCard Q (1.3.4Q) and ColdCard MK4 (5.4.4) with outstanding improvements in security features and user experience. This is a notable update for anyone concerned about Bitcoin security.\u00a0<\/span><\/i><\/p>\n<h2><b>What&#8217;s new in this COLDCARD firmware release?<\/b><\/h2>\n<h3><b>Seed XOR: Dispersed Security with Seed Vault<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">A key improvement is support for XOR from Seed Vault. XOR allows you to combine two functioning private keys to make a new key, much like a complex passphrase. With support for this feature, you can:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Get the XOR Seed Parts directly from your Seed Vault.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Recover your dispersed Seed XOR across multiple locations without needing to bring all the seeds together in one spot.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">With the <a href=\"https:\/\/bitcoinvn.io\/shop\/product\/coldcard-q\/\" target=\"_blank\" rel=\"noopener\">COLDCARD Q<\/a>, you can scan the seed parts from SeedQR sheets for convenience.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This offers convenience while also making seed management safer in recovery situations.<\/span><\/p>\n<h3><b>Multisig: More flexible and easier to use<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">The new firmware also brings several changes for multisig wallets:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Users can turn off BIP-67 compliance (pubkey sorting), which allows importing descriptors with more options.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Support for importing JSON wrappers for custom naming, especially helpful when working via USB or NFC.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It removes the requirement for a checksum when importing a descriptor (though if one is present, it must be correct).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">With the COLDCARD Q, creating airgapped multisig wallets now supports BBQRs in addition to MicroSD.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">These improvements make multisig more flexible and user-friendly.<\/span><\/p>\n<figure id=\"attachment_7599\" aria-describedby=\"caption-attachment-7599\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-7599 size-full\" src=\"https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/coldcard-firmware-release-1-3-4q-5-4-4mk4-4.jpg\" alt=\"Coinkite\u2019s Coldcard Q - the flagship model from the Canadian manufacturer - sets a new standard for Bitcoin-focused security hardware\" width=\"800\" height=\"447\" srcset=\"https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/coldcard-firmware-release-1-3-4q-5-4-4mk4-4.jpg 800w, https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/coldcard-firmware-release-1-3-4q-5-4-4mk4-4-300x168.jpg 300w, https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/coldcard-firmware-release-1-3-4q-5-4-4mk4-4-768x429.jpg 768w, https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/coldcard-firmware-release-1-3-4q-5-4-4mk4-4-600x335.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-7599\" class=\"wp-caption-text\">Coinkite\u2019s Coldcard Q &#8211; the flagship model from the Canadian manufacturer &#8211; sets a new standard for Bitcoin-focused security hardware<\/figcaption><\/figure>\n<h3><b>Performance and security: Faster, safer<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">COLDCARD upgraded libsecp256k1 to version 0.5.0, which brings:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Transaction signing speed increased by about 30%.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Overall signing time is about 15% faster due to the optimization of &#8220;signature grinding for positive R.&#8221;<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Enhanced security thanks to context randomization performed before every signing session, which reduces the risk of side-channel attacks.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This is a significant improvement, especially useful for users who need to sign many complex transactions.<\/span><\/p>\n<h3><b>Bug fixes &amp; general improvements<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Both the Mk4 and Q versions received many patches and refinements:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Prevented an error when importing multisig with duplicate keys.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Reduced memory usage by not reading the entire PSBT when finalizing a transaction.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Now requires a minimum of 2 parts when recovering a Seed XOR.<\/span><\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-7598 size-full\" src=\"https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/coldcard-firmware-release-1-3-4q-5-4-4mk4-3.jpg\" alt=\"\" width=\"800\" height=\"385\" srcset=\"https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/coldcard-firmware-release-1-3-4q-5-4-4mk4-3.jpg 800w, https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/coldcard-firmware-release-1-3-4q-5-4-4mk4-3-300x144.jpg 300w, https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/coldcard-firmware-release-1-3-4q-5-4-4mk4-3-768x370.jpg 768w, https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/coldcard-firmware-release-1-3-4q-5-4-4mk4-3-600x289.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Fixed a bug in the Seed Vault menu display and correctly handled null data in OP_RETURN.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Prevented horizontal scrolling in the Address Explorer when showing addresses from a custom path.<\/span><\/li>\n<\/ul>\n<h2><b>Device-specific changes<\/b><\/h2>\n<h3><b>COLDCARD Mk4 (5.4.0)<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Fixed a bug with unstable detection of &#8220;card inserted\/not inserted&#8221; status.<\/span><\/li>\n<\/ul>\n<h3><b>COLDCARD Q (1.3.0)<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Added QR scanning to import Seed XOR or backup passwords.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Now supports sharing arbitrary files via (BB)QR file share.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Create Airgapped is now compatible with BBQRs.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Increased the default brightness when using battery power from 80% to 95%.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Fixed issues related to the LCD, card reader, and the Seed XOR import process.<\/span><\/li>\n<\/ul>\n<h2><b>Where can I buy a genuine Coldcard hardware wallet in Vietnam?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">If you are looking to buy an authentic COLDCARD hardware wallet that is absolutely secure and directly imported from <\/span><a href=\"https:\/\/bitcoinvn.io\/shop\/product-category\/coinkite\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Coinkite (Canada), visit BitcoinVN Shop <\/span><\/a><span style=\"font-weight: 400;\">&#8211; a leading and reputable distributor in Vietnam.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-7597 size-full\" src=\"https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/coldcard-firmware-release-1-3-4q-5-4-4mk4-2.jpg\" alt=\"\" width=\"800\" height=\"1066\" srcset=\"https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/coldcard-firmware-release-1-3-4q-5-4-4mk4-2.jpg 800w, https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/coldcard-firmware-release-1-3-4q-5-4-4mk4-2-225x300.jpg 225w, https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/coldcard-firmware-release-1-3-4q-5-4-4mk4-2-768x1023.jpg 768w, https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/coldcard-firmware-release-1-3-4q-5-4-4mk4-2-600x800.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">At BitcoinVN Shop, you will get:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">1-hour free security consultation with an expert.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A guarantee of a 100% authentic product, factory sealed, and never activated.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Official warranty and dedicated technical support from a crypto-savvy team.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Fast shipping, discreet, and secure packaging.<\/span><\/li>\n<\/ul>\n<p><a href=\"https:\/\/bitcoinvn.io\/shop\/warning-fake-trezor-devices\/\" target=\"_blank\" rel=\"noopener\"><b><i>Don&#8217;t take risks with fake wallets or unverified products<\/i><\/b><\/a><b><i>, you should only buy an authentic COLDCARD from an official reseller or Coldcard Factory to absolutely protect your cryptocurrency assets.<\/i><\/b><\/p>\n<h2><b>Conclusion<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">The COLDCARD Firmware updates 5.4.0 (Mk4) &amp; 1.3.0 (Q) not only bring faster performance but also enhance security and usability. With features like smart Seed XOR management, multisig improvements, and BBQRs support, COLDCARD continues to confirm its position as one of the safest and most advanced hardware wallets available today.<\/span><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/bitcoinvn.io\/shop\/product-category\/hardware-wallets\/coinkite\/\" target=\"_blank\" rel=\"noopener\"><b>Based in Vietnam?<\/b><\/a><\/p>\n<p style=\"text-align: center;\"><b>Get your authentic Coldcard today<\/b><\/p>\n<p style=\"text-align: center;\"><b>Fast domestic shipping &#8211; no import logistics hassle<\/b><\/p>\n","protected":false},"excerpt":{"rendered":"<p>COLDCARD has officially launched new Firmware for the ColdCard Q (1.3.4Q) and ColdCard MK4 (5.4.4) with outstanding improvements in security features and user experience. This is a notable update for anyone concerned about Bitcoin security.\u00a0 What&#8217;s new in this COLDCARD firmware release? Seed XOR: Dispersed Security with Seed Vault A key improvement is support for [&hellip;]<\/p>\n","protected":false},"author":136,"featured_media":7596,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[],"class_list":["post-7594","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>COLDCARD Firmware Release 1.3.4Q &amp; 5.4.4Mk4<\/title>\n<meta name=\"description\" content=\"Explore the COLDCARD 1.3.4Q &amp; 5.4.4Mk4 update - enhanced security, performance, and critical fixes for your Bitcoin wallet\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bitcoinvn.io\/shop\/coldcard-firmware-release\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"COLDCARD Firmware Release 1.3.4Q &amp; 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