Release Notes – iOS
| Product | Software Support Period End Date | 
| LU700 Series | 2028/12/31 | 
| 128 Series | 2028/12/31 | 
| LX Series | 2028/12/31 | 
LELTEK Ultrasound – LeSono App 7.2.20
October 22, 2025
- Fix system errors
 
LELTEK Ultrasound – LeSono App 7.2.18
October 13, 2025
- Improve system stability
 
LELTEK Ultrasound – LeSono App 7.2.16
October 07, 2025
- Improve system stability
 
LELTEK Ultrasound – LeSono App 7.2.14
October 02, 2025
- Improve system stability
 
LELTEK Ultrasound – LeSono App 7.2.12
September 30, 2025
- Update probe FW
 - Add TDI function
 - Add Convex probe support for Cardiac preset
 - Support more pages in portrait mode
 - Optimize UI and system performance
 - Improve image quality
 - Fix system errors
 
LELTEK Ultrasound – LeSono App 7.2.10
August 11, 2025
- UI and System Optimization
 - Bug Fixes
 
LELTEK Ultrasound – LeSono App 7.2.6
May 6, 2025
- Update probe FW
 - Support the new model of probes
 - Support the more pages in portrait mode
 - Support customized the default preset
 - Optimize UI and system performance
 - Enhance image quality
 - Update quick guide
 - Bug fixes
 
LELTEK Ultrasound – LeSono App 7.2.4
February 24, 2025
- Optimize UI and system performance
 - Bug fixes
 
LELTEK Ultrasound – LeSono App 7.2.2
January 22, 2025
- Bug fixes
 
LELTEK Ultrasound – LeSono App 7.2.0
January 10, 2025
- Update probe FW
 - Compliant with cybersecurity standards
 - Support voice control
 - Support new probes, presets, and enhance the setting of presets
 - Remove ‘Superficial Mirror’ preset
 - Support ‘Trace’ and ‘Polygon’ measurement tools
 - Support for joining Zoom meetings
 - Enhance image quality
 - Optimize UI and system performance
 - Quick guide update
 - Optimize the app permission
 - Bug fixes
 
LELTEK Ultrasound – LeSono App 6.2.184
August 9, 2024
- Optimize UI and system performance
 
LELTEK Ultrasound – LeSono App 6.2.180
July 18, 2024
- Optimize UI performance
 
LELTEK Ultrasound – LeSono App 6.2.178
July 12, 2024
- Support new probe FW update
 - Optimize Dymanic Range, Gain and TGC control
 - Add cardiac measurements(IVSd,LVIDd,LVPWd,IVSs,LVIDs,LVPWs,LVOT,LVOT area,LA,LO,LA/Ao)
 - Add PW Meas.(Vmax,LVO,VTI,SV)
 - Optimize Needle enhancement
 - Optimize PW wave
 - Add PW line Meas.
 - Optimize auto-measurement of IMT and muscle
 - Optimize DICOM resolution and tag
 - Open line Meas. segment style
 - Optimize gesture control and PDF
 - Add Russian, Korean, Italian and Portuguese languages
 - Added new veterinary probe
 
LELTEK Ultrasound – LeSono App 6.2.166
April 1, 2024
- Support gesture adjustment Gain and Depth parameters
 - Optimize operating mode and preset switching speed
 - Support PW wave type magnification adjustment
 - Fix the issue where some devices with iOS 17.4 cannot scan QR code
 - Optimize PDF format that can be output in portrait or landscape orientation
 - Optimize ROI operation
 - Support new veterinary probe
 - Support Neo Head preset
 - Support Japanese and Ukrainian languages
 - Optimize Bodymark UI
 - Optimize UI and system
 
LELTEK Ultrasound – LeSono App 6.2.128
January 23, 2024
- Optimize data storing process
 
LELTEK Ultrasound – LeSono App 6.2.124
December 25, 2023
- Lower PW sound noise
 
LELTEK Ultrasound – LeSono App 6.2.122
December 6, 2023
- Support direct switching function between B and PW modes
 - Add new version of linear probe to support image trapezoid window function
 - Optimize C and PW mode Wall Filter display UI
 - Add Pediatric Cardiac preset
 - Add Nerve Preset
 - Optimize Needle Enhancement UI
 - Add DICOM Worklist sorting function
 - Add the ability to search for patient information on the review page
 - Add the display number of image storage for each inspection data in the review page
 - Add the function of directly sharing images in Freeze mode
 - Add PDF of patient exam report direct sharing function
 - Update Preset MSK and Peripheral Vessels icons
 - Optimize Body mark bar operation
 - Add German language department
 
LELTEK Ultrasound – LeSono App 6.2.94
November 16, 2023
- Support Worklist date and time automatic sorting function
 - Fine tune the Worklist function in Fast DICOM mode
 
LELTEK Ultrasound – LeSono App 6.2.80
November 14, 2023
- Optimize some UI performance
 
LELTEK Ultrasound – LeSono App 6.2.74
September 8, 2023
- Supports Convex, Endo Cavity, MicroConvex and Phased Array probes’ image “Up and DOWN” flip function
 - Optimize the image quality of linear probe LU710-LH
 - Support one-click optimization B mode image
 - Optimize video DICOM measurement function
 - Support new series probe’s Multi-Focus function
 - Support new series probe’s PW duplex function (B & PW mode direct switching)
 - Support new series of Phased Array probe Lung Preset
 - Support the function of instant sharing of photos and videos
 - Adjust the PDF editing page format (vertical to horizontal)
 - Support French language
 - Optimize UI and system performance
 
LELTEK Ultrasound – LeSono App 6.2.34
July 7, 2023
- Support needle puncture image enhancement (Needle Enhancement) function
 - Support CCA (Common Carotid Artery) Stenosis measurement function
 - Support high-frequency linear probe preset for Aesthetic Medicine
 - Support the function of setting the Color bar with the Steering angle change
 - Optimize patient information export function
 - Support Spanish and Portuguese language
 - Optimize PW mode sound and image
 - Memorize the body mark status of current exam
 - Optimize UI and system performance
 
LELTEK Ultrasound – LeSono App 6.2.30
June 6, 2023
- Support needle puncture image enhancement (Needle Enhancement) function
 - Support CCA (Common Carotid Artery) Stenosis measurement function
 - Support high-frequency linear probe preset for Aesthetic Medicine
 - Support the function of setting the Color bar with the Steering angle change
 - Optimize patient information export function
 - Support Spanish and Portuguese language
 - Optimize PW mode sound and image
 - Memorize the body mark status of current exam
 - Optimize UI and system performance
 
LELTEK Ultrasound – LeSono App 6.2.6
March 31, 2023
- Update probe firmware
 - Optimize DICOM upload and download process
 - Provide EndoCavity probe with early obstetric measurement
 - Add new frequency for Linear probe (710LH)
 - Optimize DICOM tag list
 - Optimize system and UI
 
LELTEK Ultrasound – LeSono App 6.2.2
March 24, 2023
- Update probe firmware
 - Optimize DICOM upload and download process
 - Provide EndoCavity probe with early obstetric measurement
 - Add new frequency for Linear probe (710LH)
 - Optimize DICOM tag list
 - Optimize system and UI
 
LELTEK Ultrasound – LeSono App 5.2.386
January 19, 2023
- Optimize PW mode UI
 - Optimize system performance
 
LELTEK Ultrasound – LeSono App 5.2.360
December 28, 2022
- Optimize DICOM upload function
 - Optimize re-measured and re-edited function
 
LELTEK Ultrasound – LeSono App 5.2.348
December 9, 2022
- Saved images can be re-measured and re-edited
 - Enhance PW sound function for iOS 16
 - Support in-app language instant switching function
 - Support AFI (Amniotic Fluid Index) measurement function of OB (Obstetrics)
 - Increase the sensing depth of all probes
 - Optimize system and UI
 
LELTEK Ultrasound – LeSono App 5.2.346
December 7, 2022
- Saved images can be re-measured and re-edited
 - Support in-app language instant switching function
 - Support AFI (Amniotic Fluid Index) measurement function of OB (Obstetrics)
 - Increase the sensing depth of all probes
 - Support 5G probe frequency switching function
 - Optimize system and UI
 
LELTEK Ultrasound – LeSono App 5.2.188
October 7, 2022
- Enhance image quality of B and C mode of linear probe
 - Enhance Endo Cavity probe to support THI (Tissue Harmonic Imaging) function
 - Support new high frequency linear probe
 - Add the initial selection Preset option in home page setting
 - Optimize low battery reminder
 - Optimize UI and system performance
 
LELTEK Ultrasound – LeSono App 4.2.88
August 11, 2022
- Optimize DICOM image upload function
 - Optimize PW Mode UI
 - Optimize measurement UI
 
LELTEK Ultrasound – LeSono App 4.2.46
July 7, 2022
- Optimize the manual measurement PW mode VTI function
 - Optimize the function of directly copying the first screen’s image, measurement and annotation to the second screen
 - Optimize the probe upgrade function
 - Optimize iPad mini 6 UI
 - Optimize Menu UI
 
LELTEK Ultrasound – LeSono App 4.2.16
June 16, 2022
- Optimize the function of prompting users to update the App
 - Optimize multiframe DICOM function
 - Optimize the dual-screen function
 - Optimize probe connection function
 - Optimize obstetric (OB) measurement function
 - Optimize PW Mode measurement, and the automatic measurement function
 - Optimize the display of Probe List on the home page
 
LELTEK Ultrasound – LeSono App 4.2.4
June 11, 2022
- Optimize the function of prompting users to update the App
 - Optimize multiframe DICOM function
 - Optimize the dual-screen function
 - Optimize probe connection function
 - Optimize obstetric (OB) measurement function
 - Optimize PW Mode measurement, and the automatic measurement function
 - Optimize the display of Probe List on the home page
 
LELTEK Ultrasound – LeSono App 4.2.2
June 10, 2022
- Optimize multiframe DICOM function
 - Optimize the dual-screen function
 - Optimize probe connection function
 - Optimize obstetric (OB) measurement function
 - Optimize PW Mode measurement, and the automatic measurement function
 - Optimize the display of Probe List on the home page
 
LELTEK Ultrasound – LeSono App 3.2.46
April 30, 2022
- Optimize Endocavity probe’s performance
 - Optimize system performance
 
LELTEK Ultrasound – LeSono App 3.2.7
March 19, 2022
- Optimize the probe update function
 
LELTEK Ultrasound – LeSono App 2.2.258
February 23, 2022
- Enhance probe data transfer rate
 - Optimize image quality (Linear, Convex, Micro Convex and Phased Array)
 - Optimize PW mode measurement text: “VF” to “VFM Max”, “M” to “TAV Max”
 - Optimize initial PW mode baseline position
 - Optimize Cardiac Probe Measurements
 - Add new function to scan Barcode / QR code to bring in patient info when on patient info page
 - Fixed PW mode measurement unit error
 
LELTEK Ultrasound – LeSono App 1.14.4
January 15, 2022
- Optimize the function of DICOM to download Worklist
 - Fix patient information input issue
 
LELTEK Ultrasound – LeSono App 1.14.3
December 15, 2021
- Correct PW Mode measurement text error: VFM Max
 - Optimize the retrospective recording function
 - Add the number of retrospective inspections
 - Optimize measurement UI
 - Optimize the accuracy of bladder urine volume measurement
 - Optimize the DICOM download function
 - Optimize system stability
 
LELTEK Ultrasound – LeSono App 1.14.2
November 3, 2021
- Enhance the image quality of the convex probe in the THI-OFF state
 - Increase convex probe sensing depth
 - Add B mode cardiac measurement
 - Increase hip joint measurement
 - Enhance the accuracy of OB gestational age
 - Enhance the probe update function
 
LELTEK Ultrasound – LeSono App 1.14.1
October 7, 2021
- Enhance linear probe image quality
 - Add ventricle measurement
 - Patient information can be edited during review
 - Optimize cineloop UI
 - Optimize UI and system performance
 
LELTEK Ultrasound – LeSono App 1.13.5
August 19, 2021
- Enhance M mode measurement function
 - Enhance automatic measurement function in PW mode
 - Optimize UI
 
LELTEK Ultrasound – LeSono App 1.13.4
August 10, 2021
- Enhance probe update function
 - Enhance probe connection using probe list
 - Optimize M mode measurement UI
 - Optimize UI and system performance
 
LELTEK Ultrasound – LeSono App 1.13.3
July 8, 2021
- Enhance measurement function of preset OB
 
LELTEK Ultrasound – LeSono App 1.13.2
June 15, 2021
- Enhance Image quality for B, C and PW mode
 
LELTEK Ultrasound – LeSono App 1.13.1
June 10, 2021
- Fine-tune UI
 - Support more probe type (for new submission)
 - Enhance measurement functions
 - Add message for DICOM communication
 
LELTEK Ultrasound – LeSono App 1.12.8
March 10, 2021
- Enhance Wi-Fi connection capability
 - Fine-tune UI
 - Add new frequency setting for Micro Convex probe
 - Fine-tune PW mode performance
 
LELTEK Ultrasound – LeSono App 1.12.7
January 14, 2021
- Add deletion of user-defined preset
 - Fine-tune UI flow
 - Support dual screen feature
 - Add new preset
 - Change APP Icon
 - Support more types of devices
 
LELTEK Ultrasound – LeSono App 1.12.6
December 18, 2020
- Optimized for supporting more types of devices
 
LELTEK Ultrasound – LeSono App 1.12.5
October 26, 2020
- Adjust UI button “PW_EXIT” position for PW mode
 - Adjust UI color for “Advance Setting” button when being clicked
 - Modify some text in “About” info
 - Fix some UI control flow bugs
 
LELTEK Ultrasound – LeSono App 1.12.4
October 8, 2020
- Add PW auto measurement function
 - Add urine measurement for Bladder
 - Fix some UI bugs
 
LELTEK Ultrasound – LeSono App 1.12.3
September 22, 2020
- Modify UI for quick switching between C mode and PW mode
 - Fix image broken bug when freezing the probe to review the image
 - Add PW gate unit
 - Fix TGC setting issue
 - Modify measurement item’s color
 - Add dynamic range info on textview
 - Modify freeze timer setting mechanism
 - Optimize UI
 
LELTEK Ultrasound – LeSono App 1.12.1
July 11, 2020
- Fix UI error when connected to micro-convex probe.
 - Update format of probe id on UI.
 
LELTEK Ultrasound – LeSono App 1.12.0
June 23, 2020
- Enhance DICOM C-Find function
 - Enhance DICOM C-Store function
 - Improve image saving and video output function
 - Improve measurement function
 
LELTEK Ultrasound – LeSono App 1.11.2
May 12, 2020
- Adjust PDF output function
 - Add probe scanning information on output image
 
LELTEK Ultrasound – LeSono App 1.11.1
May 1, 2020
- Fine-tune measurement feature
 - Fine-tune video output feature
 
LELTEK Ultrasound – LeSono App 1.11.0
April 29, 2020
- Modify PDF export format
 - Add PW mode sample gate positioning
 - Modify DICOM Tag
 - Fix PW mode measurement error
 - System opitimization and UI fine-tuning
 
LELTEK Ultrasound – LeSono App 1.10.0
February 21, 2020
- Update some Dicom tag element.
 - Add some Wi-Fi connection error message.
 
LELTEK Ultrasound – LeSono App 1.0.8
February 7, 2020
- Wi-Fi connection UI improvement
 - Fix bug of that when both photos and videos are saved, the export function cannot work for photo gallery
 - Improve UI
 
LELTEK Ultrasound – LeSono App 1.0.7
January 16, 2020
- Body mark
 - Video output
 - Photo management
 - DICOM file generated
 - Wi-Fi connection quality improvement
 
LELTEK Ultrasound – LeSono App 1.0.6
December 3, 2019
- Setting tgc by sliding bar in new ui component.
 - Fix bug: get ssid in iOS 13 fail.
 - Set new flow of connection for QR code and wifi scan.
 
LELTEK Ultrasound – LeSono App 1.0.5
November 19, 2019
- Fix UI error when get SSID fail after QR code scan.
 
LELTEK Ultrasound – LeSono App 1.0.4
November 13, 2019
- Fix bug of that Wi-Fi SSID of the probe cannot be shown on the homepage when connecting to it
 - Some UI optimization
 
LELTEK Ultrasound – LeSono App 1.0.3
November 12, 2019
- Add multiple scanning parts of human body with preset setting
 - System optimization
 
LELTEK Ultrasound – LeSono App 1.0.2
October 19, 2019
- Fix bug: button of connect is not visible on wifi page sometimes.
 
LELTEK Ultrasound – LeSono App 1.0.1
October 16, 2019
- Enable the WiFi Information Entitlement in iOS 13.
 
LELTEK Ultrasound – LeSono App 1.0
August 15, 2019
The first release of the LELTEK Ultrasound – LeSono App iOS version.