{"id":7605,"date":"2025-10-20T10:12:45","date_gmt":"2025-10-20T03:12:45","guid":{"rendered":"https:\/\/bitcoinvn.io\/shop\/?p=7605"},"modified":"2025-10-20T10:12:45","modified_gmt":"2025-10-20T03:12:45","slug":"ra-mat-firmware-coldcard","status":"publish","type":"post","link":"https:\/\/bitcoinvn.io\/shop\/vi\/ra-mat-firmware-coldcard\/","title":{"rendered":"Ra m\u1eaft firmware COLDCARD 1.3.4Q &#038; 5.4.4Mk4: N\u00e2ng c\u1ea5p b\u1ea3o m\u1eadt to\u00e0n di\u1ec7n"},"content":{"rendered":"<p><i><span style=\"font-weight: 400;\">COLDCARD v\u1eeba ch\u00ednh th\u1ee9c ra m\u1eaft firmware m\u1edbi cho 2 m\u1eabu v\u00ed c\u1ee9ng <\/span><\/i><b><i>Coldcard Q (phi\u00ean b\u1ea3n 1.3.4Q)<\/i><\/b><i><span style=\"font-weight: 400;\"> v\u00e0 <\/span><\/i><b><i>Coldcard MK4 (phi\u00ean b\u1ea3n 5.4.4)<\/i><\/b><i><span style=\"font-weight: 400;\"> v\u1edbi nhi\u1ec1u c\u1ea3i ti\u1ebfn v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 <\/span><\/i><b><i>b\u1ea3o m\u1eadt<\/i><\/b><i><span style=\"font-weight: 400;\"> v\u00e0 <\/span><\/i><b><i>tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng<\/i><\/b><i><span style=\"font-weight: 400;\">. \u0110\u00e2y l\u00e0 b\u1ea3n c\u1eadp nh\u1eadt r\u1ea5t \u0111\u00e1ng ch\u00fa \u00fd cho nh\u1eefng ai quan t\u00e2m \u0111\u1ebfn v\u1ea5n \u0111\u1ec1 b\u1ea3o m\u1eadt t\u00e0i s\u1ea3n Bitcoin.<\/span><\/i><\/p>\n<h2><b>C\u00f3 g\u00ec m\u1edbi trong b\u1ea3n c\u1eadp nh\u1eadt firmware COLDCARD?<\/b><\/h2>\n<h3><b>Seed XOR: B\u1ea3o m\u1eadt ph\u00e2n t\u00e1n v\u1edbi Seed Vault<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">T\u00ednh n\u0103ng \u0111\u00e1ng ch\u00fa \u00fd nh\u1ea5t l\u00e0 <\/span><b>h\u1ed7 tr\u1ee3 XOR t\u1eeb Seed Vault <\/b><span style=\"font-weight: 400;\">(Kho l\u01b0u tr\u1eef b\u1ea3o m\u1eadt d\u00e0nh cho Seedphrase trong v\u00ed COLDCARD). XOR cho ph\u00e9p b\u1ea1n <\/span><b>k\u1ebft h\u1ee3p 2 kho\u00e1 ri\u00eang (private key)<\/b><span style=\"font-weight: 400;\"> \u0111\u1ec3 t\u1ea1o th\u00e0nh <\/span><b>m\u1ed9t kho\u00e1 m\u1edbi<\/b><span style=\"font-weight: 400;\">, t\u01b0\u01a1ng t\u1ef1 nh\u01b0 m\u1ed9t \u201cm\u1eadt kh\u1ea9u ph\u1ee9c t\u1ea1p\u201d \u0111\u01b0\u1ee3c gh\u00e9p l\u1ea1i.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">V\u1edbi t\u00ednh n\u0103ng n\u00e0y, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">L\u1ea5y <\/span><b>c\u00e1c ph\u1ea7n Seed XOR<\/b><span style=\"font-weight: 400;\"> tr\u1ef1c ti\u1ebfp t\u1eeb kho l\u01b0u tr\u1eef b\u1ea3o m\u1eadt Seed Vault<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Kh\u00f4i ph\u1ee5c Seed<\/b><span style=\"font-weight: 400;\"> \u0111\u00e3 ph\u00e2n t\u00e1n \u1edf nhi\u1ec1u n\u01a1i <\/span><b>m\u00e0 kh\u00f4ng c\u1ea7n gom to\u00e0n b\u1ed9<\/b><span style=\"font-weight: 400;\"> v\u1ec1 m\u1ed9t ch\u1ed7.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Tr\u00ean <\/span><b>COLDCARD Q<\/b><span style=\"font-weight: 400;\">, b\u1ea1n c\u00f3 th\u1ec3 <\/span><b>qu\u00e9t m\u00e3 SeedQR<\/b><span style=\"font-weight: 400;\"> \u0111\u1ec3 thao t\u00e1c d\u1ec5 d\u00e0ng h\u01a1n.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">T\u1ea5t c\u1ea3 nh\u1eefng \u0111i\u1ec1u n\u00e0y gi\u00fap vi\u1ec7c qu\u1ea3n l\u00fd v\u00e0 kh\u00f4i ph\u1ee5c Seed an to\u00e0n h\u01a1n, thu\u1eadn ti\u1ec7n h\u01a1n.<\/span><\/p>\n<h3><b>T\u00ednh n\u0103ng Multisign d\u1ec5 d\u00f9ng v\u00e0 linh ho\u1ea1t h\u01a1n<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">B\u1ea3n c\u1eadp nh\u1eadt c\u0169ng n\u00e2ng c\u1ea5p m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng cho v\u00ed \u0111a ch\u1eef k\u00fd:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Tr\u01b0\u1edbc \u0111\u00e2y, COLDCARD lu\u00f4n s\u1eafp x\u1ebfp kh\u00f3a theo quy t\u1eafc BIP-67. Gi\u1edd \u0111\u00e2y, b\u1ea1n c\u00f3 th\u1ec3 <\/span><b>t\u1eaft t\u00ednh n\u0103ng n\u00e0y<\/b><span style=\"font-weight: 400;\"> \u0111\u1ec3 <\/span><b>nh\u1eadp c\u00e1c v\u00ed multisig linh ho\u1ea1t h\u01a1n<\/b><span style=\"font-weight: 400;\">, \u0111\u1eb7c bi\u1ec7t khi l\u00e0m vi\u1ec7c v\u1edbi v\u00ed \u0111\u01b0\u1ee3c t\u1ea1o t\u1eeb ph\u1ea7n m\u1ec1m kh\u00e1c (nh\u01b0 Sparrow, Specter, BlueWallet&#8230;).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">B\u1ea3n c\u1eadp nh\u1eadt n\u00e0y cho ph\u00e9p v\u00ed Coldcard c\u00f3 th\u1ec3 \u0111\u1ecdc file m\u00f4 t\u1ea3 v\u00ed (descriptor) \u1edf d\u1ea1ng JSON v\u00e0 cho ph\u00e9p b\u1ea1n <\/span><b>\u0111\u1eb7t t\u00ean ri\u00eang cho v\u00ed<\/b><span style=\"font-weight: 400;\">. \u0110i\u1ec1u n\u00e0y <\/span><b>gi\u00fap ph\u00e2n bi\u1ec7t c\u00e1c v\u00ed d\u1ec5 d\u00e0ng h\u01a1n<\/b><span style=\"font-weight: 400;\">, nh\u1ea5t l\u00e0 khi b\u1ea1n qu\u1ea3n l\u00fd nhi\u1ec1u v\u00ed qua USB ho\u1eb7c NFC.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Gi\u1edd \u0111\u00e2y, b\u1ea1n kh\u00f4ng c\u1ea7n nh\u1eadp m\u00e3 ki\u1ec3m tra checksum m\u00e0 v\u1eabn c\u00f3 th\u1ec3 nh\u1eadp file descriptor, gi\u00fap vi\u1ec7c <\/span><b>chuy\u1ec3n d\u1eef li\u1ec7u gi\u1eefa c\u00e1c v\u00ed ho\u1eb7c ph\u1ea7n m\u1ec1m kh\u00e1c d\u1ec5 d\u00e0ng h\u01a1n<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cho ph\u00e9p t\u1ea1o v\u00ed multisig an to\u00e0n (m\u00e0 kh\u00f4ng c\u1ea7n k\u1ebft n\u1ed1i m\u1ea1ng &#8211; airgapped) b\u1eb1ng c\u00e1ch qu\u00e9t m\u00e3 BBQR, thay v\u00ec ch\u1ec9 d\u00f9ng th\u1ebb MicroSD nh\u01b0 tr\u01b0\u1edbc.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Nh\u01b0 v\u1eady, c\u00e1c c\u1ea3i ti\u1ebfn n\u00e0y gi\u00fap thao t\u00e1c multisig tr\u1edf n\u00ean linh ho\u1ea1t, d\u1ec5 d\u00f9ng v\u00e0 ph\u00f9 h\u1ee3p h\u01a1n cho ng\u01b0\u1eddi m\u1edbi.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-7609 size-full\" src=\"https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/ra-mat-firmware-coldcard-1-3-4q-5-4-4mk44.jpg\" alt=\"\" width=\"800\" height=\"447\" srcset=\"https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/ra-mat-firmware-coldcard-1-3-4q-5-4-4mk44.jpg 800w, https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/ra-mat-firmware-coldcard-1-3-4q-5-4-4mk44-300x168.jpg 300w, https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/ra-mat-firmware-coldcard-1-3-4q-5-4-4mk44-768x429.jpg 768w, https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/ra-mat-firmware-coldcard-1-3-4q-5-4-4mk44-600x335.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p><a href=\"https:\/\/bitcoinvn.io\/shop\/product\/coldcard-q\/\" target=\"_blank\" rel=\"noopener\"><i><span style=\"font-weight: 400;\">V\u00ed Coldcard Q c\u1ee7a Coinkite<\/span><\/i><\/a><i><span style=\"font-weight: 400;\"> &#8211; m\u1eabu m\u00e1y ch\u1ee7 l\u1ef1c t\u1eeb nh\u00e0 s\u1ea3n xu\u1ea5t Canada &#8211; thi\u1ebft l\u1eadp m\u1ed9t ti\u00eau chu\u1ea9n m\u1edbi cho ph\u1ea7n c\u1ee9ng b\u1ea3o m\u1eadt t\u1eadp trung v\u00e0o Bitcoin<\/span><\/i><\/p>\n<h3><b>Hi\u1ec7u su\u1ea5t &amp; b\u1ea3o m\u1eadt: Nhanh h\u01a1n, an to\u00e0n h\u01a1n<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">COLDCARD c\u0169ng n\u00e2ng c\u1ea5p th\u01b0 vi\u1ec7n m\u1eadt m\u00e3 (libsecp256k1) l\u00ean phi\u00ean b\u1ea3n m\u1edbi 0.5.0, mang l\u1ea1i:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>T\u1ed1c \u0111\u1ed9 k\u00fd giao d\u1ecbch nhanh h\u01a1n ~30%<\/b><span style=\"font-weight: 400;\">,<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>T\u1ed5ng th\u1eddi gian x\u1eed l\u00fd nhanh h\u01a1n ~15%<\/b><span style=\"font-weight: 400;\">,<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>B\u1ea3o m\u1eadt cao h\u01a1n<\/b><span style=\"font-weight: 400;\">, nh\u1edd k\u1ef9 thu\u1eadt ng\u1eabu nhi\u00ean h\u00f3a m\u1ed7i l\u1ea7n k\u00fd \u0111\u1ec3 tr\u00e1nh b\u1ecb t\u1ea5n c\u00f4ng qua t\u00edn hi\u1ec7u ph\u1ea7n c\u1ee9ng.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">N\u1ebfu b\u1ea1n th\u01b0\u1eddng xuy\u00ean k\u00fd nhi\u1ec1u giao d\u1ecbch ho\u1eb7c v\u1eadn h\u00e0nh v\u00ed multisig, \u0111\u00e2y l\u00e0 m\u1ed9t c\u1ea3i ti\u1ebfn r\u1ea5t \u0111\u00e1ng gi\u00e1.<\/span><\/p>\n<h3><b>S\u1eeda l\u1ed7i &amp; c\u1ea3i ti\u1ebfn t\u1ed5ng th\u1ec3<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">COLDCARD \u0111\u00e3 v\u00e1 nhi\u1ec1u l\u1ed7i nh\u1ecf v\u00e0 l\u00e0m cho 2 chi\u1ebfc v\u00ed MK4, Q ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh h\u01a1n, m\u01b0\u1ee3t m\u00e0 h\u01a1n:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>S\u1eeda l\u1ed7i khi nh\u1eadp kh\u00f3a tr\u00f9ng l\u1eb7p trong v\u00ed \u0111a ch\u1eef k\u00fd<\/b><span style=\"font-weight: 400;\">: Tr\u01b0\u1edbc \u0111\u00e2y, n\u1ebfu b\u1ea1n nh\u1eadp m\u1ed9t v\u00ed <\/span><b>multisig<\/b><span style=\"font-weight: 400;\"> m\u00e0 v\u00f4 t\u00ecnh c\u00f3 2 kh\u00f3a gi\u1ed1ng nhau, thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 b\u00e1o l\u1ed7i ho\u1eb7c kh\u00f4ng nh\u1eadp \u0111\u01b0\u1ee3c. B\u00e2y gi\u1edd, l\u1ed7i n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eeda.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Gi\u1ea3m s\u1eed d\u1ee5ng b\u1ed9 nh\u1edb khi ho\u00e0n t\u1ea5t giao d\u1ecbch (kh\u00f4ng c\u1ea7n \u0111\u1ecdc to\u00e0n b\u1ed9 PSBT):<\/b><span style=\"font-weight: 400;\"> PSBT (Partially Signed Bitcoin Transaction) l\u00e0 t\u1ec7p giao d\u1ecbch \u0111ang ch\u1edd k\u00fd. Tr\u01b0\u1edbc \u0111\u00e2y, khi k\u00fd xong giao d\u1ecbch, v\u00ed \u0111\u1ecdc to\u00e0n b\u1ed9 file, t\u1ed1n nhi\u1ec1u b\u1ed9 nh\u1edb. Gi\u1edd COLDCARD ch\u1ec9 \u0111\u1ecdc ph\u1ea7n c\u1ea7n thi\u1ebft, gi\u00fap x\u1eed l\u00fd nhanh h\u01a1n, ti\u1ebft ki\u1ec7m b\u1ed9 nh\u1edb.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Y\u00eau c\u1ea7u t\u1ed1i thi\u1ec3u 2 ph\u1ea7n Seed khi kh\u00f4i ph\u1ee5c Seed XOR \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n.<\/span><\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-7608 size-full\" src=\"https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/ra-mat-firmware-coldcard-1-3-4q-5-4-4mk43.jpg\" alt=\"\" width=\"800\" height=\"385\" srcset=\"https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/ra-mat-firmware-coldcard-1-3-4q-5-4-4mk43.jpg 800w, https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/ra-mat-firmware-coldcard-1-3-4q-5-4-4mk43-300x144.jpg 300w, https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/ra-mat-firmware-coldcard-1-3-4q-5-4-4mk43-768x370.jpg 768w, https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/ra-mat-firmware-coldcard-1-3-4q-5-4-4mk43-600x289.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;\">S\u1eeda l\u1ed7i hi\u1ec3n th\u1ecb trong menu Seed Vault v\u00e0 x\u1eed l\u00fd ch\u00ednh x\u00e1c d\u1eef li\u1ec7u null trong OP_RETURN.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Tr\u01b0\u1edbc \u0111\u00e2y, khi xem danh s\u00e1ch \u0111\u1ecba ch\u1ec9 v\u00ed (trong <\/span><b>Address Explorer<\/b><span style=\"font-weight: 400;\">), n\u1ebfu b\u1ea1n d\u00f9ng <\/span><b>\u0111\u01b0\u1eddng d\u1eabn t\u00f9y ch\u1ec9nh (custom path)<\/b><span style=\"font-weight: 400;\">, m\u00e0n h\u00ecnh c\u00f3 th\u1ec3 b\u1ecb <\/span><b>cu\u1ed9n ngang kh\u00f3 \u0111\u1ecdc<\/b><span style=\"font-weight: 400;\">. Gi\u1edd <\/span><b>\u0111\u00e3 ch\u1ec9nh l\u1ea1i giao di\u1ec7n<\/b><span style=\"font-weight: 400;\">, gi\u00fap xem \u0111\u1ecba ch\u1ec9 <\/span><b>g\u1ecdn g\u00e0ng v\u00e0 d\u1ec5 nh\u00ecn h\u01a1n<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<\/ul>\n<h2><b>M\u1ed9t s\u1ed1 n\u00e2ng c\u1ea5p ri\u00eang cho t\u1eebng thi\u1ebft b\u1ecb\u00a0<\/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;\">S\u1eeda l\u1ed7i ph\u00e1t hi\u1ec7n tr\u1ea1ng th\u00e1i \u201cth\u1ebb c\u1eafm\/ch\u01b0a c\u1eafm\u201d kh\u00f4ng \u1ed5n \u0111\u1ecbnh.<\/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;\">\u0110\u00e3 th\u00eam t\u00ednh n\u0103ng qu\u00e9t m\u00e3 QR \u0111\u1ec3 nh\u1eadp Seed XOR ho\u1eb7c m\u1eadt kh\u1ea9u d\u1ef1 ph\u00f2ng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Hi\u1ec7n h\u1ed7 tr\u1ee3 chia s\u1ebb t\u1ec7p t\u00f9y \u00fd qua t\u00ednh n\u0103ng chia s\u1ebb t\u1ec7p (BB)QR.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">T\u00ednh n\u0103ng t\u1ea1o v\u00ed kh\u00f4ng k\u1ebft n\u1ed1i m\u1ea1ng (Airgapped) gi\u1edd \u0111\u00e2y c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u00e3 QR n\u00e2ng cao (BBQR) \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb, thay v\u00ec ch\u1ec9 d\u00f9ng th\u1ebb nh\u1edb (MicroSD).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>T\u0103ng \u0111\u1ed9 s\u00e1ng m\u1eb7c \u0111\u1ecbnh<\/b><span style=\"font-weight: 400;\"> khi d\u00f9ng pin (t\u1eeb 80% \u2192 95%).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u0110\u00e3 kh\u1eafc ph\u1ee5c c\u00e1c s\u1ef1 c\u1ed1 li\u00ean quan \u0111\u1ebfn m\u00e0n h\u00ecnh LCD, \u0111\u1ea7u \u0111\u1ecdc th\u1ebb v\u00e0 quy tr\u00ecnh nh\u1eadp Seed XOR.<\/span><\/li>\n<\/ul>\n<h2><b>Mua v\u00ed c\u1ee9ng Coldcard ch\u00ednh h\u00e3ng \u1edf \u0111\u00e2u t\u1ea1i Vi\u1ec7t Nam?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">N\u1ebfu b\u1ea1n \u0111ang t\u00ecm mua v\u00ed c\u1ee9ng COLDCARD ch\u00ednh h\u00e3ng, an to\u00e0n tuy\u1ec7t \u0111\u1ed1i v\u00e0 \u0111\u01b0\u1ee3c nh\u1eadp kh\u1ea9u tr\u1ef1c ti\u1ebfp t\u1eeb Coinkite (Canada), <\/span><a href=\"https:\/\/bitcoinvn.io\/shop\/product-category\/coinkite\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">h\u00e3y gh\u00e9 th\u0103m BitcoinVN Shop<\/span><\/a><span style=\"font-weight: 400;\"> &#8211; nh\u00e0 ph\u00e2n ph\u1ed1i uy t\u00edn h\u00e0ng \u0111\u1ea7u t\u1ea1i Vi\u1ec7t Nam.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-7607 size-full\" src=\"https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/ra-mat-firmware-coldcard-1-3-4q-5-4-4mk42.jpg\" alt=\"\" width=\"800\" height=\"1066\" srcset=\"https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/ra-mat-firmware-coldcard-1-3-4q-5-4-4mk42.jpg 800w, https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/ra-mat-firmware-coldcard-1-3-4q-5-4-4mk42-225x300.jpg 225w, https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/ra-mat-firmware-coldcard-1-3-4q-5-4-4mk42-768x1023.jpg 768w, https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2025\/10\/ra-mat-firmware-coldcard-1-3-4q-5-4-4mk42-600x800.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Mua h\u00e0ng t\u1ea1i \u0111\u00e2y, b\u1ea1n s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>1h t\u01b0 v\u1ea5n b\u1ea3o m\u1eadt mi\u1ec5n ph\u00ed<\/b><span style=\"font-weight: 400;\"> c\u00f9ng chuy\u00ean gia b\u1ea3o m\u1eadt h\u00e0ng \u0111\u1ea7u.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cam k\u1ebft h\u00e0ng 100% ch\u00ednh h\u00e3ng, nguy\u00ean tem ni\u00eam phong v\u00e0 ch\u01b0a bao gi\u1edd \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">B\u1ea3o h\u00e0nh ch\u00ednh h\u00e3ng v\u00e0 \u0111\u01b0\u1ee3c \u0111\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt vi\u00ean am hi\u1ec3u v\u1ec1 ti\u1ec1n \u0111i\u1ec7n t\u1eed h\u1ed7 tr\u1ee3 t\u1eadn t\u00ecnh.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Giao h\u00e0ng nhanh, \u0111\u00f3ng g\u00f3i c\u1ea9n th\u1eadn, k\u00edn \u0111\u00e1o v\u00e0 an to\u00e0n.<\/span><\/li>\n<\/ul>\n<p><a href=\"https:\/\/bitcoinvn.io\/shop\/vi\/phat-hien-vi-trezor-one-nhai\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">\u0110\u1eebng m\u1ea1o hi\u1ec3m v\u1edbi v\u00ed gi\u1ea3 ho\u1eb7c s\u1ea3n ph\u1ea9m ch\u01b0a \u0111\u01b0\u1ee3c x\u00e1c minh<\/span><\/a><span style=\"font-weight: 400;\">, b\u1ea1n ch\u1ec9 n\u00ean mua COLDCARD ch\u00ednh h\u00e3ng t\u1eeb \u0111\u1ea1i l\u00fd ch\u00ednh th\u1ee9c ho\u1eb7c Nh\u00e0 m\u00e1y Coldcard \u0111\u1ec3 b\u1ea3o v\u1ec7 tuy\u1ec7t \u0111\u1ed1i t\u00e0i s\u1ea3n ti\u1ec1n \u0111i\u1ec7n t\u1eed c\u1ee7a m\u00ecnh.<\/span><\/p>\n<blockquote>\n<p style=\"text-align: center;\"><a href=\"https:\/\/bitcoinvn.io\/shop\/product-category\/coinkite\" target=\"_blank\" rel=\"noopener\"><b>Truy c\u1eadp ngay t\u1ea1i \u0111\u00e2y \u0111\u1ec3 mua h\u00e0ng ch\u00ednh h\u00e3ng!<\/b><\/a><\/p>\n<\/blockquote>\n<h2><b>K\u1ebft lu\u1eadn<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">C\u00e1c b\u1ea3n c\u1eadp nh\u1eadt firmware COLDCARD 5.4.0 (Mk4) &amp; 1.3.0 (Q) kh\u00f4ng ch\u1ec9 mang l\u1ea1i hi\u1ec7u su\u1ea5t nhanh h\u01a1n m\u00e0 c\u00f2n n\u00e2ng cao t\u00ednh b\u1ea3o m\u1eadt v\u00e0 kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng. V\u1edbi c\u00e1c t\u00ednh n\u0103ng nh\u01b0 qu\u1ea3n l\u00fd Seed XOR th\u00f4ng minh, c\u1ea3i ti\u1ebfn \u0111a ch\u1eef k\u00fd v\u00e0 h\u1ed7 tr\u1ee3 BBQR, COLDCARD ti\u1ebfp t\u1ee5c kh\u1eb3ng \u0111\u1ecbnh v\u1ecb th\u1ebf l\u00e0 m\u1ed9t trong nh\u1eefng v\u00ed ph\u1ea7n c\u1ee9ng an to\u00e0n v\u00e0 ti\u00ean ti\u1ebfn nh\u1ea5t hi\u1ec7n nay.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>COLDCARD v\u1eeba ch\u00ednh th\u1ee9c ra m\u1eaft firmware m\u1edbi cho 2 m\u1eabu v\u00ed c\u1ee9ng Coldcard Q (phi\u00ean b\u1ea3n 1.3.4Q) v\u00e0 Coldcard MK4 (phi\u00ean b\u1ea3n 5.4.4) v\u1edbi nhi\u1ec1u c\u1ea3i ti\u1ebfn v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 b\u1ea3o m\u1eadt v\u00e0 tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng. \u0110\u00e2y l\u00e0 b\u1ea3n c\u1eadp nh\u1eadt r\u1ea5t \u0111\u00e1ng ch\u00fa \u00fd cho nh\u1eefng ai quan t\u00e2m \u0111\u1ebfn v\u1ea5n \u0111\u1ec1 [&hellip;]<\/p>\n","protected":false},"author":136,"featured_media":7596,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-7605","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Ra m\u1eaft firmware COLDCARD 1.3.4Q &amp; 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