Leica SL2-S firmware

Firmware history

1. Version 6.3.0 Latest First seen Aug 7, 2026
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   LEICA SL2

   LEICA SL2-S

   FIRMWARE UPDATE 6.2.0

   EXTENDED FUNCTIONALITY

   • The new M lens (Noctilux-M 35 f/1.2 ASPH.) is supported.

   IMPROVEMENT

   • Leica SL2-S: Improved visibility of focus peaking in magnified view during manual focusing in video mode.
   • An issue has been resolved where, under certain c​onditions, the battery could drain while the Bluetooth/Remote Wake-up function was enabled, even though the camera was turned off.
   • An issue with vignetting correction when using the Noctilux-M 50 f/1.2 ASPH.that could lead to overcompensation has been resolved.
   • An issue where manual focus might not be available in video mode with certain L-moun​t lenses has been resolved.
   • An issue has been resolved that could cause image artifacts at the bottom edge of DNG files when using Adobe Camera Raw AI Denoise.
   • An issue with the accuracy of the T-stop display in Cine mode with certain L-mount Cine lenses has been resolved.
   Release notes & download
2. Version 6.2.0 First seen Jul 7, 2026
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   LEICA SL2

   LEICA SL2-S

   FIRMWARE UPDATE 6.2.0

   EXTENDED FUNCTIONALITY

   •  The requirements of Lot6/Lot26, Regulation (EU) 2023/826 on ecode- sign are supported.

   EN

   FIRMWARE UPDATES

   Leica is continuously working on the further improvement and optimization of your camera.

   Since many camera functions are entirely controlled by software, some of these improve- ments and additions to the functional scope can be installed in retrospect.

   Leica offers firm- ware updates at irregular intervals, which you can download from our website.

   Leica will notify you of any new updates, once you have registered your camera.

   Users of Leica FOTOS will also be automatically notified about firmware updates for their Leica cameras.

   There are two options for installing firmware updates. –conveniently via the Leica FOTOS app –directly via the camera menu Finding the currently installed firmware version →Select Camera Information in the main menu

   • The current ​firmware versions are displayed.

   More information about registering, firmware updates and how to download them to your camera, as well as any amendments and additions to this manual can be found in the cus- tomer area of our website at: https://club.leica-camera.com

   EXECUTING A FIRMWARE UPDATE

   Any interruption of a running firmware update may cause serious and irreparable damage to your equipment! You will therefore have to take particular note of the following, when carrying out a firm- ware update:

   • Do not switch off the camera!
   • Do not remove the memory card!
   • Do not remove the rechargeable battery!
   • Do not detach the lens!

   Notes

   • A warning message will appear if the battery is insufficiently charged. Recharge the battery and then repeat the process described above.
   • You will find additional device and country-specific registration marks and numbers in the Camera Information submenu.

   PREPARATION

   →Fully charge and insert the rechargeable battery →The second SD memory card (where applicable) must be removed from the camera →Any stored firmware files on the memory card must be removed

   • We recommend saving any images on the memory card and reformatting it before the update.

   (Caution: Loss of data! All data stored on the memory card will be lost during formatting.) →Download the latest firmware version →Save the download to the memory card

   • The firmware file must be stored in the main directory of the memory card (not in a sub-directory).

   →Insert the memory card into the camera →Switch the camera on

   UPDATING THE CAMERA FIRMWARE

   →Preparation →Select Camera Information in the main menu →Select Camera Firmware Version →Select Start Update

   • A prompt with information about the camera is displayed.

   →Check the version information →Select Yes

   • The prompt Save profiles on SD Card? appears.

   →Select Yes/No

   • The update will start automatically.
   • The lower status LED will flash during this process.
   • Once the process has completed successfully, a relevant on-screen message and prompt to restart the device will appear on screen.

   →Switch the camera off and on again Note

   • Date & time, as well as the preferred language will have to be set up again after the restart. Relevant prompts will appear on screen.

   UPDATING THE LENS FIRMWARE

   Where available, firmware updates can be performed for Leica SL lenses​ and for all other lens types by L-Mount Alliance.

   Firmware updates for Leica SL lenses are generally uploaded alongside the latest version of the camera firmware and will not have to be implemented manually.

   Provided an SL lens is attached during the camera update, it will automatically receive the latest firmware version.

   Where that is not the case, a relevant prompt will appear when a lens is attached to a cam- era with updated firmware for the first time.

   The instructions provided for camera firmware updates apply. →Preparation →Select Camera Information in the main menu →Select Lens Firmware Version →Select Start Update

   • A prompt with information about the camera is displayed.

   →Check the version information →Select Yes

   • The update will start automatically.
   • The lower status LED will flash during this process.
   • Once the process has completed successfully, a relevant on-screen message and prompt to restart the device will appear on screen.

   →Switch the camera off and on again

   Release notes & download
3. Version 5.2.0 First seen Jul 7, 2026

   Release notes not published by vendor — see official page.

   Release notes & download
4. Version 4.0 First seen Jul 7, 2026
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   LEICA SL2-S

   FIRMWARE

   • Camera model Firmware version
   • Leica SL2-S 4.0

   PHOTO

   _NEW: Perspecti​ve control

   VIDEO

   _NEW: The incremental value for a direct setting of the ISO value can now be selected via the setting wheels (1 EV, 1⁄2 EV, 1⁄3 EV, or 1⁄6 EV)

   PHOTO/VIDEO

   _NEW: The lens profile menu has been supplemented with additional focal length settings _NEW: The dropdown list for FN button assignments is now customizable and has been extended _DETAILED: Supported lenses _IMPROVED: In some cases, the lens Exif information is missing for third-party lens adapters _CORRECTED: In some rare cases, the functions Pair and Delete wer​e no longer available in the Leica FOTOS menu, once the connection was disabled _CORRECTED: Some minor issues with the newly introduced function Toggle Focus Point have been remedied.

   The focus positions are now saved correctly.

   Release notes & download