Panasonic says LUMIX S9 Firmware 2.1 is planned for October 13, 2026, at 1:00 a.m. UTC. The update is scheduled to add more MP4 (Lite) recording options, expand the functions assignable to compatible Lens Fn buttons, and add support for LUMIX Flow version 1.7.0. LUMIX Lab version 3.1.1 is also planned to support the new S9 recording formats.
These are announced feature changes, not tested results. Panasonic’s supplied descriptions do not establish bitrate, file-size savings, battery impact, transfer speed, image-quality changes, or compatibility with every lens or app version.
What S9 Firmware 2.1 is scheduled to add
New MP4 (Lite) recording options
Panasonic lists these new MP4 (Lite) recording options for the LUMIX S9:
- 4K 60p and 4K 50p
- Full HD 120p, 100p, 60p, and 50p
The supplied announcement identifies the recording resolutions and frame rates, but does not provide bitrate, codec-performance, file-size, storage, battery, or image-quality measurements. “MP4 (Lite)” is therefore used here only as Panasonic labels it; this article does not infer what the new modes will mean for a particular workflow.
More Lens Fn Button assignments
Panasonic says Firmware 2.1 expands the functions available for Lens Fn Button settings. The listed additions include:
- Aspect Ratio
- E-Stabilization (Video)
- Boost I.S. (Video)
- Image Area of Video
- Focus Ring Control
- Focus Limiter
- Hybrid Zoom
- Crop Zoom, including related zoom-operation functions
- Focus Peaking
- Video Record
This is a documented list of assignable functions, not a guarantee that every function works with every L-Mount lens. Panasonic’s announcement says the feature applies when paired with a camera that supports the relevant features. The supplied excerpts do not identify a complete lens-by-lens compatibility table.
What the related app updates change
LUMIX Lab version 3.1.1
Panasonic says LUMIX Lab 3.1.1 will support the newly added MP4 (Lite) recording formats on the LUMIX S9. It also lists LUT category filtering, downloadable LUT Packs grouped by creative theme, and user-interface and usability improvements.
The announcement does not describe a complete transfer procedure, supported phone list, transfer speeds, or whether every existing LUMIX Lab function changes. Those details should be checked in the app’s current documentation when the update becomes available.
LUMIX Flow version 1.7.0
Panasonic says LUMIX Flow 1.7.0 expands compatibility to the LUMIX S9 and includes usability improvements intended to support content-production workflows. The supplied material does not specify every Flow feature available with the S9 or provide a step-by-step monitoring or transfer workflow.
When the updates are planned
Panasonic’s September 16, 2026 announcement says the S9 firmware and the LUMIX Lab and LUMIX Flow app updates are planned for public availability on October 13, 2026, at 1:00 a.m. UTC. Panasonic’s firmware-update page describes the updates as free downloads from LUMIX Global Customer Support, but the supplied excerpts do not show the final download pages or installation instructions for Version 2.1.
Until the planned release date, S9 owners should treat the feature list as an announcement rather than an available update. The excerpts do not establish whether the schedule can change.
Who is most likely to care about this update?
The documented changes are most relevant to S9 owners who want the newly listed MP4 (Lite) frame-rate options, use a compatible lens with a Lens Fn button, or want to use LUMIX Flow with the S9. Owners mainly interested in still-image quality, battery life, transfer speed, or autofocus performance should wait for documentation or evidence that addresses those topics; the supplied Panasonic excerpts do not make those claims.
Research method and limitations
This article was prepared from the supplied public Panasonic excerpts retrieved on September 22, 2026, plus one supplied competitor excerpt used only to compare coverage. The Panasonic passages support the stated feature lists, product versions, compatibility statements, planned date, and free-download description. They do not provide hands-on testing, laboratory measurements, benchmark results, complete lens compatibility, installation steps, or a comprehensive review. The competitor passage was truncated and was not used as technical authority.
Text version of the diagrams
- Camera Firmware vs Apps: S9 Firmware — MP4 Lite and Lens Fn; LUMIX Lab — Formats and LUT tools; LUMIX Flow — S9 compatibility added
- Documented vs Unknown: Documented — Modes and assignments; Not measured — Bitrate and battery; Not complete — Lens compatibility table
