If you generated the seed using an Mk3 on version 4.0.1 (March 2021) or any subsequent version URGENT ACTION IS REQUIRED! Seeds generated on Mk4, Q and Mk5 before the fixed firmware releases are also affected. UPDATE AND SEED REGENERATION IS REQUIRED! https://coldcard.com/docs/upgrade/

Important security advisory regarding older Mk3 units. Note for COLDHODL customers: We have never sold the Mk3 or any earlier models. https://blog.coinkite.com/coldcard-mk3-seed-generation-warning/

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