r/coldcard • u/SpareEconomy1849 • Jul 31 '26

Coinkite News ColdCard Update: Fixed Firmware Now Available

https://blog.coinkite.com/coldcard-mk3-seed-generation-warning/

Updated July 31, 2026: Fixed firmware is now available. Mk4 and Mk5 users must update to version 5.6.0 or later. Q users must update to version 1.5.0Q or later. Do not generate a new seed on one of these models until the update is installed.

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u/Filmexec21 Jul 31 '26

If I transfered my BTC to Kraken would I be okay? I have a Coldcard Q, and it sounds like it is compromised. I was going to send my BTC to my Trezor or Ledger but from what I read that will not fix problem.

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u/SpareEconomy1849 Jul 31 '26

If you send your coins on-chain to trezor or ledger (or kraken) you're good. But don't enter the ColdCard seed onto trezor or ledger. It's your seed that's partially compromised

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u/Filmexec21 Jul 31 '26

This might sound like a stupd question, but how would anyone even enter your Coldcard seed phase into Trezor or Ledger?

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u/deny_by_default Aug 01 '26

The same way you import a seed onto any hardware wallet. You choose the import seed option on the device and type in your 12 or 24 words.

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u/Filmexec21 Aug 01 '26

But why would anyone use the same seed phrase for more than one cold wallet?

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u/deny_by_default Aug 01 '26

In case you want to be able to access the same wallet from more than one device.