COLDCARD Security Advisory A seed-generation defect affected releases beginning with firmware 4.0.1. Fixed firmware is available. Existing affected seeds still require migration. Check status

Latest Firmware Versions

Fixed firmware is available for every supported COLDCARD model. Updating corrects future seed generation but does not repair an existing affected seed. Check current security status

COLDCARD Mk5/Mk4

COLDCARD Mk5/Mk4

Current version: 5.6.0 Fixed release

Download 5.6.0 All files for Mk

COLDCARD Q

COLDCARD Q

Current version: 1.5.0Q Fixed release

Download 1.5.0Q All files for Q

COLDCARD Mk5/Mk4 (EDGE)

Current version: 6.6.0X Fixed release

List files for Mk EDGE

COLDCARD Q (EDGE)

Current version: 6.6.0QX Fixed release

List files for Q EDGE

COLDCARD Mk4

Current version: 5.4.5

All files for Mk4

COLDCARD Mk3 and Mk2

Current version: 4.2.0 Fixed release

All files for Mk3

COLDCARD Mk1

Current version: 3.0.6

All files for Mk1

All downloadable files