Leviathan & Scylla by JeffTron5.0.1

JeffTron application turns your smartphone into controllable fire control unit for your airsoft gun.
Thanks to this app you can easily set up your gun in real time.
App works in wireless mode with Leviathan hardware from the Jefftron Company, for all functions you have to buy Leviathan unit.
By this app you can also upgrade your Leviathan unit for free with updates which we release in the future.

Features:
- hybrid fire modes
- binary trigger mode
- pre-cocking function for instant shot on SEMI fire
- statistics shows cycle timing, motor current consumption, rate of fire and mosfet temperature.
- adjustable active braking (can be disabled)
- smooth control rate of fire
- fast trigger response
- adjustable burst fire
- low battery indicator
- time delay between shots
- low current consumption in idle state
- 3 shot counters
- error log shows problems made during the device life
- Electronic fuse avoid any damage to Leviathan if something goes wrong
- User can save multiple settings under profiles
- controling hardware via wireless connection
- update function fixes bugs and adds new features to the device

Contact us:
support@jefftron.cz

If you like this app please join the group on the Facebook!
https://www.facebook.com/groups/Leviathan.by.jeffTron.QA/

App requires wireless BLE connection with Leviathan hardware.
We are constantly optimizing application and adding new features for free.

Version History - Fixed missing options for safe slector position for Scylla AEG
- Fixed fw update dialog 5.0.1 Jun 29 Added support for HPA system 5.0.0 Jun 19 Fixed buttons bug 4.4.1 Jan 29 - Added support for new V2 Optical GTS hardware 4.4.0 Jan 26 - New features:
- Added OTA emergency update for Scylla
- Enabled BOSS feature for V3 hardware
- Bug fixes:
- Fixed external sound system 4.3.0 11/07/2025 - Added technical lock feature
- Fixed negative values in temperature 4.2.0 07/11/2025 New features:
- Added B.O.S.S feature to external inputs
- Improve Bluetooth communication
Bug fixes:
- Fixed auto start Bluetooth scan
- Fixed changing device name
- Fixed minor bugs 4.1.0 11/14/2024 Bug fixes:
- External input did not display all options 4.0.11 07/29/2024 - New app design
- New preview mode for all JeffTron device
- New sensor check section
- Support for new JeffTron device
- Info text about all device features
- Bug fixes 4.0.10 07/23/2024 Cybergun partnership 3.7.0 01/26/2024 New features:
- DMR selector calibration
- Warning and error notification
- New error log
Bug fixes:
- Fixed link to Leviathan HUD google watch 3.6.0 10/25/2023 - New features:
- Fine selector calibration
- Push notification
- New language Swedish
- Disabled profiles when is device not connected
- Added watermark when is device not connected 3.5.0 08/22/2023 New features:
- External Sound System
- Option turn on/off selector movement sound (Error 101)
- Adjustment vibration intensity
- Added new languages (Italian, Dutch and Danish)
- Little changes in UI 3.4.0 11/18/2022 - Fixed selector calibration response
- Added battery percentage view
- Added remember multiple gun password
- Added Leviathan HUD link
- Added brushless motor feature
- Added low performance battery feature 3.3.0 08/08/2022 Fixed scrolling on cycle calibration screen 3.2.2 05/02/2022 Added automatic cycle calibration feature 3.2.1 04/28/2022 -Fixed remember password bug 3.1.3 03/10/2022 Added support for ASG EVO3 3.1.1 03/03/2022 New features:
- Error log update on opening.
- Adding Hungarian language.
- Bluetooth screen set as default after app launch.
- Adding "active output" option to dropdown selector on SAFE if device has external output.
- Adding option to select FW version to update.
- Adding list of already connected devices to the app for quick connection option.

Fixed bugs:
- Fixed error when connecting to device (loading indicator).
- Fixed small issues in the UI. 3.1.0 09/22/2021 We fixed FW update bug (Bootloader not responding) and add multiple attempts to FW update. 3.0.3 05/19/2021 We fixed some bugs and added new improvements

- Now can change value virtual magazine by buttons by one unit
- Disabled semi auto sensor check in AUG mode

Bug fixes in this version include:
- Fixed sensor check bug
- Fixed error log bug
- Fixed connection issues
- Fixed external input EVO1.0 bug 3.0.2 04/30/2021 Fixed bugs in:
- Cycle calibration
- Bluetooth status bar
- Factory reset 3.0.1 03/18/2021 - New UI
- Dark theme
- Added Sound signalization
- Supports Leviathan - NGRS optical & Leviathan - V3 optical
- Improved performance
- Optical selector calibration
- Optical cycle calibration
- Virtual magazine
- External input & output
- Added Spanish language 3.0.0 02/25/2021 - Cycle detection calibration
- Full Auto Limit
- Improved optical calibration 1.5.1 11/24/2020 - Added support for V2 IFCU 1.4.3 07/30/2020