Support / Firmware
H1 firmware and release notes
The current H1 firmware is version 1.4.0, released on 8 September 2026. Updates are free. Below are the update steps and every release since launch.
How to update
- Charge the battery to at least 60 percent. The camera refuses to start an update below that.
- Format an SD card in the camera. Updates load from the SD slot only, not from CFexpress.
- Copy the file
H1_FW140.HVF to the root of the card, not into a folder.
- Insert the card, open Setup, page 5, and choose Firmware update.
- Do not switch off the camera or open the battery door. The update takes about 4 minutes and the camera restarts twice.
Lens firmware is installed the same way with the lens mounted. The camera checks the lens version after every body update and offers the newest version included in the body file.
Settings are kept across updates, except when going from 1.2.x to 1.3.0, which resets custom button assignments.
Firmware files are sent by email on request to support@halvane-optics.com, or installed free at our showroom. Downgrading is not supported.
| Lens | Current | Released |
|---|
| HV 28 mm f/2 Asph | 1.1 | 2026-03-10 |
| HV 40 mm f/2.4 | 1.0 | 2025-03-04 |
| HV 75 mm f/2 ED | 1.0 | 2025-11-03 |
Release notes
1.4.0
2026-09-08 / Current version
New
- Two monochrome profiles, Mono Soft and Mono Hard, with adjustable grain in three strengths.
- Shutter count readout under Setup, page 5, Camera information.
- USB webcam mode (UVC), up to 1920 x 1080 at 30p.
- Auto ISO minimum shutter speed can now follow focal length (1/focal length, 1/2x focal length).
Fixed
- Rear screen brightness could reset to 0 after waking from standby.
- Time stamp was written in UTC when the time zone was set to Asia/Kolkata.
Fixed
- Wi-Fi connection dropped on 5 GHz channels 149 to 165.
- Focus peaking in red was not shown in the EVF in high-performance mode.
New
- Six-bit lens code reading with the HV-M adapter.
- 20 user profiles for adapted lenses, with focal length, aperture and vignetting correction.
- Browser tethering: the H1 serves a local page over Wi-Fi for live view and remote release, with no app required.
- Supports lens firmware 1.1 for the HV 28 mm f/2 Asph (quieter focus motor at close distances).
Changed
- Default auto power off moved from 1 minute to 3 minutes.
New
- Support for the HV 75 mm f/2 ED, including full-speed autofocus.
- Focus bracketing, 2 to 299 frames, step width 1 to 10.
- Interval timer with exposure smoothing.
Fixed
- Rare freeze when formatting a CFexpress card while a file was still being written to SD.
New
- Full HD recording at 120p.
- Body detection added to subject tracking.
- 65:24 aspect ratio.
Changed
- Eye detection now switches between eyes faster when the subject turns.
Fixed
- Formatting error on some 512 GB CFexpress Type B cards.
- Battery percentage could jump from 20 to 5 percent in cold conditions.
1.0.0
2025-03-04 / Launch firmware