Elecraft K3S firmware v1.78

Elecraft · Released Mar 18, 2009 · First seen Sep 14, 2026

Source: elecraft.com

v1.78 is not the latest firmware for the Elecraft K3S: the current version is v5.67 (January 22, 2019). Go to v5.67

What's in this update

  • SPOT now ​usable in R​EF CAL menu entry.

updatemystuff.com never hosts firmware files — always download from the official source.

Get it from Elecraft

Watch the K3S for updates

Create a free account and get an email the moment Elecraft publishes new firmware.

Create account & watch

Other versions for this product

See the full firmware history for the K3S