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LiveUpdated 2026-09-23 17:13 UTC

COINKITE Blog

COINKITE Blog — Modify COLDCARD firmware, test it in the simulator, build a development-key DFU for…

COINKITE Blog is Modify COLDCARD firmware, test it in the simulator, build a development-key DFU for Mk4/Mk5 or Q, and install it on dedicated hardware.. It is ranked #911 on the Dev Radar, in Security, first seen 1 h ago and shared in 1 post (180 views).

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Build and Run Your Own COLDCARD Firmware | COINKITE Blog Blog Careers Contact RSS Email Newsletter Store × Home Blog Careers Contact RSS Email Newsletter Store ← Back to posts Build and Run Your Own COLDCARD Firmware Published Sep 23, 2026 Categories: ckcc COLDCARD will run firmware you build yourself. The source tree includes the development signing private key (key zero), so you can change the code, test it, build a DFU file, and install it without asking Coinkite to sign it. The bootloader makes the difference obvious. Development firmware gets a warning and forced delay on every boot. It cannot quietly pass as factory firmware. This…

What people said about COINKITE Blog on X

simulator doesn't expose the RNG issue sadly

@theinstagibbs, 1 h ago · 4 likes · see the post

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FAQ

What is COINKITE Blog?

Modify COLDCARD firmware, test it in the simulator, build a development-key DFU for Mk4/Mk5 or Q, and install it on dedicated hardware. It was first shared on X 1 h ago and is ranked #911 on the Dev Radar.

Is COINKITE Blog free?

Yes, it is free to use.

Who shared COINKITE Blog?

1 account on X, including @theinstagibbs, in 1 post totalling 180 views.

Every post is read and classified by Jev (TypeSafe): what it is, which market it belongs to, and whether the link is a real tool. 22.7k posts from 5k X accounts over the last 21 days, 2.6k tools, 12 markets. Collected every 5 minutes, fully re-ranked every hour — last update 2026-09-23 17:13 UTC. Full method.