> For the complete documentation index, see [llms.txt](https://emotiv.gitbook.io/cortex-library-for-mobile/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://emotiv.gitbook.io/cortex-library-for-mobile/release-notes.md).

# Release Notes

These release notes only list the changes in the Objective-C and Java wrappers of Cortex library. To see all the changes made in Cortex in each release, you should also read the [release notes of the Cortex API](https://emotiv.gitbook.io/cortex-api/release-notes).

The Cortex library uses the same version numbers as the [Cortex API](https://emotiv.gitbook.io/cortex-api/).

## Cortex Library 4.7.8 - Jun 2025

* add [acceptLicense](/cortex-library-for-mobile/jsonapi/accept-license.md) API

## Cortex Library 3.5.7 - Jul 2023

* Update to request JSON detection and personal params with JWT token.

## Cortex Library 3.5.5 - Jun 2023

* Bug fixes.

## Cortex Library 3.4.2 - Dec 2022

* Fixed wrong activity in Mental Command during training.
* Update for new Bluetooth permission on Android 12.

## Cortex Library 3.3.1 - Aug 2022

* New platform supports and bug fixes.

## Cortex Library 3.2 - Mar 2022

* Bug fixes 

## Cortex Library 3.0 Beta - October 2021

* Add the method [freeUpRecords](/cortex-library-for-mobile/jsonapi/freeuprecords.md)

## Cortex Library 2.7.2 Beta - July 2021

* Change the result of the JSON methods [deleteVirtualHeadset](/cortex-library-for-mobile/jsonapi/deletevirtualheadset.md) and [triggerVirtualHeadsetEvent](/cortex-library-for-mobile/jsonapi/triggervirtualheadsetevent.md)

## Cortex Library 2.7.1 Beta - May 2021

* Add a callback as the argument of the function CortexLib.start ([Objective-C](/cortex-library-for-mobile/objective-c-api/cortexlib-class.md#start), [Java](/cortex-library-for-mobile/java-api/cortexlib-class.md#start))
* Add the function CortexClient.authenticate ([Objective-C](/cortex-library-for-mobile/objective-c-api/cortexclient-class.md#authenticate), [Java](/cortex-library-for-mobile/java-api/cortexclient-class.md#authenticate))
* Add the function CortexClient.getAuthenticationCode ([Java](/cortex-library-for-mobile/java-api/cortexclient-class.md#getauthenticationcode))
* In the [JSON API](/cortex-library-for-mobile/jsonapi.md), replace the method "login" by [loginWithAuthenticationCode](/cortex-library-for-mobile/jsonapi/loginwithauthenticationcode.md)

## Cortex Library 2.7.0 Beta - April 2021

First Beta release.