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Front-Applet

Latest Beta Version​

[8.8.0] - 2026-06-04​

Added​

  • Package API method sos.management.package.clearData(string) to clear user data of a package without uninstalling it

[8.7.0] - 2026-04-24​

Added​

  • Added lowLatency option to IStreamOptions for low-latency stream playback
  • NMC (Network Management Control) commands for LG support in sos.native.nmc API
  • sos.management.network.sendUdp() API for sending raw UDP datagrams
  • sos.management.network.sendWakeOnLan() API for sending Wake-on-LAN magic packets
  • SEND_UDP and WAKE_ON_LAN management capabilities

Fixed​

  • Unify weekday types in sos.management.power

[8.6.0] - 2026-04-02​

Added​

  • Optional config parameter in sos.sync.connect() for sync-server engine, allowing slave devices to broadcast values to all devices in the group

Fixed​

  • Updated sos.management.app.upgrade(appUri) JSDoc with correct platform-specific URL format requirements, trailing slash constraint, and redirect limitations

[8.5.3] - 2026-03-20​

Fixed​

  • Missing documentation for fpath utility
  • Method sos.management.network.importCertificate() is now matching types for EAP auth type with sos.management.wifi.connect().

[8.5.2] - 2026-02-13​

[8.5.1] - 2026-01-27​

Fixed​

  • Fixed sos.management.wifi.getConnectedTo() to return the SSID string instead of the internal object

[8.5.0] - 2025-12-09​

Added​

  • Method sos.deviceInfo.getLocation() can now return child tags.
  • Deprecated function sos.deviceInfo.getOrganizationTags() in favor of sos.management.getDeviceTags().
  • Method sos.management.getCapabilities() for getting all supported management capabilities of the device
  • Method sos.display.getCapabilities() for getting all supported front capabilities of the device

Fixed​

  • Wi-Fi password for open networks can now be undefined, to unify usage with all platforms
  • Typescript interfaces across documentation now have correctly shown descriptions in documentation
  • Monitoring command for filesystem wipeout is now returned before the wipeout starts

[8.4.0] - 2025-11-04​

Added​

  • Support for optional headers in sos.management.screen.takeAndUploadScreenshot(url, options) method

[8.3.0] - 2025-10-15​

Added​

  • Support for setup EAP credentials in Wi-Fi management API
  • Function sos.network.importCertificate() to import EAP certificates to the device

[8.2.4] - 2025-09-23​

[8.2.3] - 2025-09-23​

Fixed​

  • Updated underlying libraries
  • Fixed security issues

[8.2.2] - 2025-09-01​

Fixed​

  • Increase limit for max emitter warning in sos.command.onCommand()
  • Improved documentation for management APIs, including app, audio, network, power, screen, time, Wi-Fi, and firmware
  • Capabilities are now written in every section description to understand what is supported on which platform

[8.2.1] - 2025-08-22​

Fixed​

  • When getting the device name fails, it gets the name from the device instead of HTML

[8.2.0] - 2025-08-21​

Added​

  • Package API method sos.management.package.stop()

[8.1.4] - 2025-08-14​

Fixed​

  • Improved documentation for hardware, monitors, osd, synchronizer, offline resources, and offline cache APIs
  • Missing typescript definition for sos.native.mdc.sendOneRaw()
  • Better visibility of required parameters in the documentation by adding Required column to the parameters table

[8.1.3] - 2025-08-04​

Fixed​

  • Improved documentation for file system, device info, display, remote debugs, command, browser and input APIs

[8.1.2] - 2025-07-28​

Fixed​

  • Improved documentation for video and stream APIs

[8.1.1] - 2025-07-09​

Fixed​

  • Correctly export fpath utility

[8.1.0] - 2025-06-27​

Added​

  • Support for creating scheduled reboots on device
  • Receiving aHash information about screenshots when device returns it
  • New file system method sos.filesystem.wipeout() to clear internal storage

[8.0.3] - 2025-05-23​

Fixed​

  • Improved documentation

[8.0.2] - 2025-05-22​

Fixed​

  • Improved documentation

[8.0.0] - 2025-05-16​

Added​

  • A new convenience API method for listing only internal storage units of the device

Changed​

  • Generate docs automatically using a custom code generator

Fixed​

  • Simplify event listener types
  • Add specify possible values of some strings
  • Add JSDoc comments to the public APIs
  • (internal) upgrade Node to Node 20
  • Update the URL of developer documentation used in error suggestions
  • Possible memory leak on Tizen 2.4 according to polyfilled Error.stack

[7.2.0] - 2025-03-03​

Added​

  • Add support for sos device connect with sending logs and errors to the local development machine

[7.1.1] - 2025-02-17​

Fixed​

  • Remove dependency on @signageos/lib npm package (it's available only internally and not in public registry.npmjs.org)
  • Load weinre JS file from the weinre server (not bundled in the front-applet library)

[7.1.0] - 2025-02-11​

Added​

  • Add fpath utility
  • Add support for sending MDC with subcommands on Tizen sos.native.mdc.sendOneRaw()
  • Support for changing hardware acceleration sos.management.setHardwareAcceleration() and sos.management.isHardwareAccelerationEnabled()

Fixed​

  • Type sos.config object properly

[7.0.0] - 2025-02-06​

Added​

  • Add support for new monitoring commands for testing purposes
  • Enhance IFile type by extending it from IFilePath for better type consistency
  • Add fpath utility

Fixed​

  • Incorrect implementation of peer and auto recovery commands
  • Fix sos, frontApplet and monitoring exports in the bundle

Changed​

  • Added Typescript interface for every JS API class

[6.7.0] - 2024-11-13​

Added​

  • New method sos.sync.isMaster to get master/slave status of the device
  • Event emitted by sos.sync.onStatus contains isMaster property that indicates if the device is master or slave of that sync group

[6.6.0] - 2024-10-30​

Added​

  • New method sos.deviceInfo.getDeviceName to get the name of the device

[6.5.7] - 2024-07-31​

Fixed​

  • Key event bridge now gracefully handles cross-origin frames.

[6.5.6] - 2024-07-29​

Fixed​

  • Documentation patch: Fill in and correct Browser API description

[6.5.5] - 2024-05-24​

Fixed​

  • Documentation patch: Addind Applet Dispatch Throttling information

[6.5.4] - 2024-05-15​

Fixed​

  • Better description of the serial port options on BrightSign
  • Documentation patch: New section in Applet Basics for the sos.authHash used as unique device identification from Applet

[6.5.3] - 2024-04-30​

Fixed​

  • Documentation patch: Browser.open() is supported on BrightSign
  • Documentation patch: improved iFrames snippet intro text to be less scary
  • Documentation patch: Added platform-specific details for using streaming on BrightSign and Samsung

[6.5.2]​

Added​

  • Support for the rtscts option for the serial port configuration. This option is used when opening a serial port and determines whether to enable or disable RTS/CTS handshaking.

[6.5.1] - 2024-04-08​

Fixed​

  • Incompatibility with latest changes in MDC implementation

[6.5.0] - 2024-03-20​

Added​

  • Add support for sending MDC commands on Tizen

[6.4.2] - 2024-01-26​

Fixed​

  • Documentation on several pages is now readable again due to fixes in MD files

[6.4.1] - 2024-01-24​

Fixed​

  • Stream public documentation formatting

[6.4.0] - 2024-01-24​

Added​

  • New method sos.stream.pause() to pause running stream
  • New method sos.stream.resume() to resume paused stream

[6.3.0] - 2024-01-16​

Added​

  • Browser API new option "method"
  • New methods for managing the event listeners of input

[6.2.1] - 2024-01-15​

Fixed​

  • Docs markdowns

[6.2.0] - 2024-01-15​

Added​

  • Add keepAppletRunning parameter in sos.management.power.setProprietaryTimer
  • sos.management.getExtendedManagementUrl()
  • sos.management.setExtendedManagementUrl()

[6.1.1] - 2023-12-20​

Fixed​

  • Stream prepare and play functions now works without specified protocol type in options
  • Streams are now backward compatible with old core apps

[6.1.0] - 2023-11-09​

Added​

  • Support for stream subtitles - track info and track selection

Fixed​

  • Sanitized dispatching events for case of the missing parent window

[6.0.0] - 2023-09-11​

Changed​

  • Stream functions prepare and play now have merged protocol parameter and other properties into one options parameter

Fixed​

  • Updated docs: Removed readFile limitation note on WebOS

[5.12.2] - 2023-07-31​

Fixed​

  • Importing front-applet in TypeScript environment

[5.12.1] - 2023-07-18​

Fixed​

  • Missing docs about new stream options on prepare and play functions
  • Not returning promise on stream functions

[5.12.0] - 2023-07-13​

Added​

  • sos.sync.cancelWait()
  • sos.sync.onClosed()
  • sos.sync.connect() accepts sync engine type p2p-local which replaces udp
  • Options parameter on method sos.stream.prepare() for setting ex. background prepare
  • Options parameters autoReconnect & autoReconnectInterval on prepare and play stream functions
  • New file system method sos.filesystem.createArchive() to create a archive file

Fixed​

  • Stream event listeners on play, prepare and stop functions
  • Wrong return type on sos.management.os.getMemoryUsage()

Deprecated​

  • Sync engine udp is replaced with p2p-local

[5.11.1] - 2023-05-29​

Fixed​

  • Input issues on some platforms with keyUp listener

[5.11.0] - 2023-05-15​

Added​

  • Methods to control and monitor Auto recovery process

Fixed​

  • Peer recovery methods unified with Auto recovery
  • sos.sync.onStatus won't be also called anytime broadcast value is received

[5.10.2] - 2023-05-05​

Fixed​

  • Try delete proprietary timers with proper delete method (backward compatiblility is kept)

[5.10.1] - 2023-04-26​

Fixed​

  • Validations of proprietary timer API (remove extra warning)

[5.10.0] - 2023-04-06​

Added​

  • New Management API for sos.management.power.setProprietaryTimer(), sos.management.power.unsetProprietaryTimer(), sos.management.power.getProprietaryTimers()

[5.9.0] - 2023-03-31​

Added​

  • sos.sync.joinGroup()
  • sos.sync.leaveGroup()
  • sos.sync.broadcastValue()
  • sos.sync.connect() allows selection of which sync engine will be used for connection

Deprecated​

  • sos.sync.init()
  • sos.sync.setValue()

[5.8.0] - 2023-03-16​

Added​

  • Method sos.refresh() has capability for relaunch applet
  • Debug has new method sos.debug.onRemoteDebugChanged(), which accepts a function that is executed as a callback.
  • Method sos.debug.isRemoteDebugEnabled() - information about REMOTE DEBUGGING setting

Fixed​

  • Wrong return type on sos.management.wifi.getConnectedTo()

[5.7.0] - 2023-02-16​

Added​

  • device key for opening serial port is not required now
  • Proof of play initial implementation
  • Update iframe documentation about a potential issue with zipping file using python
  • Device Info Brand -> sos.management.getBrand()

[5.6.0] - 2023-01-10​

Added​

  • Update serial port documentation

[5.5.0] - 2022-10-24​

Added​

  • Method for opening OSD sos.osd.showOSD()

[5.4.2] - 2022-08-30​

Fixed​

  • sos.input.onKeyUp did not work correctly on older devices

[5.4.1] - 2022-07-25​

Fixed​

  • Webpack usage of main file of library.

[5.4.0] - 2022-07-20​

Added​

  • CPU and Memory usage info
  • Proxy management
  • Wifi network ssid and signal strength information
  • Possibility to enable Front-OSD while applet active
  • Toggle Peer Recovery

[5.3.1] - 2022-05-23​

Fixed​

  • Documentation for serial device name on supported platforms

[5.3.0] - 2022-04-13​

Added​

  • Documentation for device info

[5.2.0] - 2022-04-06​

Added​

  • Method onStatus in sos.sync - return connected devices in sync group
  • Device info category: Methods to get location and organization tags
  • Add new filesystem and offline cache methods into monitoring for SDK
  • OS version info API (Windows 10 -> 10, WebOS 4 -> 4, etc)

[5.1.1] - 2022-02-08​

Fixed​

  • Fixed applet basics links

[5.1.0] - 2022-01-27​

Added​

  • Update firmware guide with new methods

Fixed​

  • fix backlinks from old to new Docs

[5.0.1] - 2022-01-25​

Fixed​

  • adjusted documentation to better reflect naming of JS SDK

[5.0.0] - 2022-01-13​

Changed​

  • onceEnded promise on video will be rejected when video is stopped before it's end
  • Video and Stream methods checks coordinations and warn when are in wrong format or throws error when are not castable to integer

[4.15.0] - 2021-12-15​

Added​

  • Management Time setManual accepts an object with absolute datetime

Fixed​

  • Updated documentation

[4.14.0] - 2021-12-03​

Added​

  • Wi-Fi API connect to a hidden network

[4.13.0] - 2021-11-26​

Added​

  • FS API appendFile
  • Management Network API disableInterface

[4.12.0] - 2021-10-04​

Added​

  • Headless Browser API

[4.11.0] - 2021-09-28​

Added​

  • Listen for when the custom browser closes

Fixed​

  • Fixed link to Firmware getType()
  • Barcode scanner API

[4.10.4] - 2021-04-14​

Fixed​

  • Added mising documentation for sos.management.app.getType()

[4.10.3] - 2021-04-12​

Fixed​

  • Added mising documentation for sos.display.supports()
  • Fixed warning in Serial API - suggest using sos.display.supports() instead of sos.management.supports()

[4.10.2] - 2021-03-09​

Fixed​

  • Improved documentation of IR Remote control Input

[4.10.1] - 2021-03-05​

Fixed​

  • Improved documentation of Applet Commands
  • Better parameters description in video stream API documentation

[4.10.0] - 2021-02-09​

Added​

  • New, improved versions of sos.management.network.setManual() and sos.management.network.setDHCP() which allow to specify an exact network interface in case there are multiple interfaces of the same type

[4.9.1] - 2021-02-05​

Fixed​

  • Fix sos.management.network.listInterfaces() return type

[4.9.0] - 2021-02-04​

Added​

  • Integrate Weinre debugging tool to applet iframe when appropriate message come from front-display
  • sos.management.network.listInterfaces()

Deprecated​

  • sos.management.network.getActiveInfo()

Fixed​

  • Added files system example for creating multiple directories at once
  • Added better explanation how to change orientation on Tizen

[4.8.1] - 2021-01-18​

Fixed​

  • Missing documentation for sos.browser.close()
  • Missing examples for applet commands

[4.8.0] - 2021-01-14​

Added​

  • sos.management.firmware.getType method returns a string identifier, that, when combined with firmware version, can be used to identify a correct firmware image to install on the current device

[4.7.0] - 2021-01-08​

Added​

  • sos.management.screen.getOrientation method returns current orientation of the screen
  • sos.stream.prepare method to prepare stream in the background ahead of playing it to allow gapless transitions similar to video

[4.6.1] - 2021-01-04​

Fixed​

  • Missing documentation page about monitors, js-monitors

[4.6.0] - 2020-12-14​

Added​

  • sos.management.wifi emits CLIENT_CONNECT_REJECTED event when incorrect credentials are used to try to connect to a Wi-Fi

[4.5.0] - 2020-11-11​

Added​

  • Touch event from external touch device can be handled and further propagated to nested iFrames

[4.4.0] - 2020-09-25​

Added​

  • Video orientation LANDSCAPE_FLIPPED
  • Validations of all input parameters
  • sos.hardware.openSerialPort() method to open and work with serial ports
  • Typescript interfaces of generic button and RFID antenna that can be implemented by other libraries that implement a specific hardware

[4.3.0] - 2020-09-01​

Fixed​

  • Font offline cache works for all platform same (using correct font file extension)
  • Fixed a bug in WPEWebkit 2.28.2 (Raspberry Pi) that caused the applet to never initialize properly and freeze

Added​

  • WiFi Access Point API
  • WiFi API supports listening to useful events
  • sos.appletVersion contains version of active applet

Deprecated​

  • sos.wifi has been moved to sos.management.wifi

[4.2.0] - 2020-07-02​

Added​

  • Audio codec and bitrate value in video file details API
  • Browser open link method optionally accepts theme option

[4.1.0] - 2020-06-23​

Added​

  • sos.management.debug.isEnabled() method for current debug state
  • sos.management.security.setPinCode/getPinCode/generateRandomPinCode methods

Fixed​

  • Possible memory leak in video player when one gapless video is playing in infinite loop

[4.0.0] - 2020-04-03​

Added​

  • File System API supports copyFile, writeFile, readFile
  • File System moveFile supports optional overwrite destination
  • New Management JS API (https://sdk.docs.signageos.io/api/js/management/1-js-management)
  • Video API supports video playing in the background with HTML content in the foreground
  • Video API supports 4K video
  • getTimers and unsetTimer of management power API
  • setNTP of time API
  • sensors API, for now just containing proximity sensor
  • Exports for CommonJS users (standard for node.js const sos = require('@signageos/front-applet')). Also exports sos and monitoring properties
  • sOS Open (bundled front-applet) support of iframes
  • Transpile to EcmaScript 5
  • Management get application version sos.management.app.getVersion()
  • New Monitors JS API
  • Video API supports volume for a single video
  • Network API for set manual settings or DHCP sos.management.network.setManual() and sos.management.network.setDHCP()
  • Browser API method sos.browser.open() which optionally allows to blacklist/whitelist specific domains
  • Browser API method sos.browser.close()
  • Optional videoThumbnailUriTemplate in file properties
  • Upgrade App or Firmware can direct to specific file instead of special path template with version name

Deprecated​

  • Network API for sos.management.getNetworkInfo() is currently moved to sos.management.network.getActiveInfo()
  • Browser API method sos.browser.openLink() is replaced by sos.browser.open().

Fixed​

  • Now, error messages are more human readable (no more invocation error)
  • Wifi scanDevices returns array

Removed​

  • Remove deprecated exports
  • Remove auto babel-polyfill

[3.2.0] - 2019-01-24​

Added​

  • File System API supports writeFile

[3.1.0] - 2019-01-18​

Added​

  • WiFi API
  • sos.display.supports method to check, which capabilities device supports

[3.0.0] - 2019-01-14​

Added​

  • File system API
  • File system API supports even extended file info (size, mimeType, createdAt, lastModified, videoDuration) when device supports it (ex.: Linux)

Changed​

  • sos.input is now EventEmitter instance type which supports classic event listening using methods on, once, addListener etc. for event 'keyup'

[2.2.0] - 2018-12-14​

Added​

  • Front display can inject a script into the applet

[2.1.0] - 2018-12-04​

Added​

Fixed​

  • import lib in typescript using import * as sos from '@signageos/front-applet';
  • interfaces of checksum (md5) methods

[2.0.0] - 2018-09-17​

Added​

Fixed​

  • Applet Commands type can has length 100 characters now
  • Bug: onceEnded will be resolved always. (Bug could happen when preparing of next video was longer then length of current video)

Removed​

  • old deprecated methods of sos.offline.cache (getFile, getContent)

[1.3.2] - 2018-06-19​

Fixed​

  • In applets and iframes can be used babel-polyfill

[1.3.1] - 2018-06-12​

Fixed​

  • Application can use window.dispatchEvent safely without error (TypeError: Cannot read property 'type' of undefined)

[1.3.0] - 2018-05-30​

Added​

[1.2.0] - 2018-05-09​

Added​