Sony Alpha 1 II (ILCE-1M2)

Sony Alpha 1 II (ILCE-1M2) firmware

Sony · Alpha 1 II (ILCE-1M2) · ILCE-1M2 · Body

Latest firmware for the Sony Alpha 1 II (ILCE-1M2) is v4.00 (October 29, 2025).

Specifications

Alpha 1 II (ILCE-1M2) specifications

Body type
SLR Style Mirrorless
Resolution
50.1 MP
Sensor
Stacked CMOS
Sensor size
35.9 × 24 mm
Processor
Dual Bionz XR
ISO range
100–32000
Fastest shutter
1/8000
Burst rate
30 fps
Battery life
520 shots (CIPA)
Storage
Dual CFexpress Type A/UHS-II SD slots
Video
XAVCS, XAVCHS, XAVCSI, H.264, H.265
Mount
Sony E
Weight
743 g
Dimensions
136 × 97 × 83 mm
Weather sealed
Yes
Price at launch
$6500

Changelog

Alpha 1 II (ILCE-1M2) firmware changelog

  1. v4.00 first tracked

Firmware history

  1. Version 4.00 Latest Released Oct 29, 2025 First seen Jul 4, 2026
    Show release notes

    Adds support for Real-time Recognition AF+ with improved subject detection and trac​king capabilities Adds support for the Preset Focus function with lenses that do not have power zoom, including Sony's manual zoom E-mount lenses The registered positions of preset focus/zoom are incompatible before and after the camera software update.

    Please re-register the preset focus/zoom after the update.

    Some zoom lenses without power zoom are not supported.

    For more details, please visit the following link: https://support.d-imaging.sony.co.jp/www/cscs/lens_body/ Adds FL2 (Film 2) and FL3 (Film 3) to the Creative Look options Improves the metering accuracy when using bounce flash Optimizes the battery ​level display Supports the Write Digital Signature function for movies as part of Sony's Camera Authenticity Solution The timing for the provision of licenses (paid) to customers other than certain media outlets is yet to be determined.

    Services may not be available in some countries or regions.

    For more information, please visit the Authenticity Catalog Page.

    Improves the operational stability of the camera

    Release notes & download

Watch the Alpha 1 II (ILCE-1M2) for updates

Get an email the moment Sony publishes new firmware. Just your email — no account or password needed.

More Sony bodies we track

Lenses that fit the Alpha 1 II (ILCE-1M2)

Matched on lens mount from the imported specifications — firmware for these is tracked too.