Wi-Fi SDK Version 2.12.1 (September 10, 2025) - Release Notes#
The Wi-Fi software development kit (SDK) provides Wi-Fi 4 connectivity in various operating modes, including Station and Software Access Point (SoftAP).
Click here for earlier releases.
Release Summary#
Key Features | API Changes | Bug Fixes | Chip Enablement
Key Features#
None
API Changes#
Wireless Query APIs modified to support fetching more details.
Bug Fixes#
Disabled the wireless activity enable/disable feature based on supply voltage.
Added documentation note about region-specific behavior of the RS9116 module while functioning in AP (Access Point) mode.
Updated the wakeup threshold to ensure RS9116 reliably wakes up to receive beacons.
Updated documentation to clarify that the 802.11r fast roaming feature is not supported.
Enhanced macro documentation in the SAPI Programming Reference Manual (PRM).
Updated the Aggregation feature description in the opermode.
Modified the Load certification section of the EAP example readme file.
Added the Note point to update the Pathlen bit in the EAP testing when using the existing Silabs wifi-user.pem file.
Updated the description of the pathlen field in opermode command.
Listed down all the available setsockopt in the PRM.
Chip Enablement#
None
Key Features#
New Features | Enhancements | Removed Features | Deprecated Features
Note: See Feature Matrix for a list of any appliable APIs, examples, software variants, modes, hardware, and host interfaces applicable for each feature.
New Features#
None
Enhancements#
Enhanced the rsi_wlan_get API to retrieve the BSSID data of connected Access Point.
Removed Features#
None
Deprecated Features#
None
API Changes#
New APIs | Modified APIs | Removed APIs | Deprecated APIs
New APIs#
None
Modified APIs#
Old API | Modified |
|---|---|
Only the output of rsi_wlan_get API has been enhanced to return the BSSID information of connected Access Point along with the other parameters. |
Removed APIs#
None
Deprecated APIs#
None
Bug Fixes#
| ID | Issue Description | GitHub / Salesforce Reference (if any) | Affected Chip Revision, Hardware, Host Interfaces |
|---|---|---|---|
| 1476699 | Wireless Initialization fails with IO_VDD 1.8V and FW 2.12.0.0.3 - 916 ACx | None |
|
| 1468498 | [9116][ACX]AP_MODE cases fail with FF82 when enable REGION support bit | None |
|
| 1440461 | Silabs issue: Triple AP beacon wakeup | None |
|
| 1416239 | Documentation changes for Wi-Fi roaming feature | None |
|
| 1392487 | SDK Update to 2.11.1 queries | None |
|
| 1502997 | Clarification in FEAT_AGGREGATION: WLAN-level aggregation vs. TCP-level expectations. | None |
|
| 1503001 | Update the proper description of existing certificate and formation in the readme file of EAP example. | None |
|
| 1503003 | Update the note point in the EAP command. | None |
|
| 1503005 | Update the description of the Pathlen field in the SAPI PRM. | None |
|
| 1503006 | Clarification on rsi_setsockopt() API: Missing option_name details in SAPI product reference manual. | None |
|
Chip Enablement#
None
Application Example Changes#
New Examples | Modified Examples | Removed Examples | Deprecated Examples
New Examples#
None
Modified Examples#
None
Removed Examples#
None
Deprecated Examples#
None
Known Issues and Limitations#
| ID | Issue or Limitation Description | GitHub / Salesforce Reference (if any) | Workaround (if any) | Affected Chip Revision, Hardware, Host Interfaces |
|---|---|---|---|---|
| NA | WPA3 Connection with Hunting and Pecking algorithm takes about three to four seconds. | None | None |
|
| NA | If the station performs a scan in concurrent mode (Wi-Fi STA + AP), stations connected to the AP may be disconnected. Enable AP after the STA connection is completed. | None | None |
|
| NA | With powersave, PTA 3-wire co-existence does not work. However, if a weak pull-up is applied on the GRANT pin, the PTA 3-wire functionality works while the power is saved. For further information, refer to Application Notes. | None | None |
|
| NA | EAP security in the aws_device_shadow application is unsupported on the EFR platform due to memory constraints. | None | None |
|
| NA | In STA + AP, if AP started first station scan is supported only in channel in which AP is brought up. If multiple channel scan is requested, AP behaviour is undefined. | None | None |
|
| NA | Auto channel selection is not supported in AP mode when the EXT_FEAT_IEEE_80211J feature is enabled. | None | None |
|
| 1250359 | WMM tests fail and low throughput is observed when aggregation support is disabled for AP. | None | None |
|
| NA | In Wi-Fi client mode, disconnections may occur if the AP does not acknowledge QoS null frames when powersave is enabled. | None | None |
|
| 1452090 | Disconnections and data transfer issues have been observed with the Ubiquiti Amplifi AP when powersave mode is enabled. | None | None |
|
| 1225954 | Reduced throughput (~1 Mb) observed during TCP RX with Max_PSP powersave enabled with D-Link 810 AP. | None | None |
|