Techart — Lm-ea9 Firmware ((link))

You cannot check the firmware on the camera’s menu screen. The LM-EA9 has no onboard display or USB port. Instead, you check it via a generated by the adapter.

It supports lenses from Voigtlander, Zeiss ZM, and Leica (from 28mm to 90mm). It will not work well (or at all) with 135mm or wider than 28mm lenses due to the physical limits of the focusing helicoid. techart lm-ea9 firmware

Unlike a camera body, which receives major feature updates (like new video codecs or autofocus tracking modes), an adapter’s firmware is usually about optimization and communication protocols. The Techart LM-EA9 firmware serves three primary functions: You cannot check the firmware on the camera’s menu screen

Updating the firmware often resets the adapter’s internal calibration. You must recalibrate for your specific Leica lens. It supports lenses from Voigtlander, Zeiss ZM, and

The file will contain a string like LM-EA9 V3.5 or V4.0 . As of this writing, the latest stable version is (released late 2023). If you see V3.0 or lower, you need an update immediately.

As of Q1 2025, , but with caveats. You need firmware V4.0 or higher. The global shutter’s readout speed is so fast that the adapter’s motor cannot keep up at 120fps burst. For single-shot and 20fps, it works perfectly.