Leica M EV1 firmware v2.6.4

Leica · Released Sep 9, 2026 · First seen Sep 9, 2026

v2.6.4 is the latest firmware for the Leica M EV1, released September 9, 2026.

In short — summary by updatemystuff.com

Added Summicron-M 66 f/2 lens support; recommends UHS-II over UHS-I SD cards.

  • Added lens profile for Summicron-M 66 f/2
  • Recommends UHS-II SD cards over UHS-I

Written from Leica's release notes, which are printed in full below.

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What's in this update

LEICA M11

LEICA M11 MONOCHROM

LEICA M11-P

LEICA M11-D

LEICA M EV1

FIRMWARE UPDATE 2.6.4

NEW

  • Lens Profile: Summicron-M 66 f/2 I​mportant information regarding the use of SD cards In rare cases, the use of UHS-I cards would result​ in some technical issues. Leica recommends using UHS-II cards to generally avoid these issues, and to guarantee the best possible performance for your camera.

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