Release Notes - SimpleLink Wi-Fi CC3235 service pack

Table of Contents


The SimpleLink™ Wi-Fi® CC323X device is a single-chip micro-controller (MCU) with built-in Wi-Fi connectivity, created for the Internet of Things (IoT). The CC323X device is a wireless MCU that integrates a high-performance ARM® Cortex®-M4 MCU, allowing customers to develop an entire application with a single IC.

Content and Documentation

This release include the ServicePack binary image to be programmed into CC313X/CC323X devices. ServicePack must be applied both in production and development stage of the CC313X/CC323X devices

File Notes
sp_4.11.0.0_3.7.0.1_3.1.0.26.bin ServicePack binary for UniFlash
sp_4.11.0.0_3.7.0.1_3.1.0.26.ucf ServicePack UCF for host driver API
sp_4.11.0.0_3.7.0.1_3.1.0.26.ucf.signed.bin ServicePack UCF signature

Version information

Component Version

What’s New

Upgrade and Compatibility Information

The ServicePack can be programmed using UniFlash utility. Latest UniFlash utility can be downloaded from

The ServicePack can also be flushed using host driver API’s or OTA application (please refer for the SimpleLink CC32xx SDK for more information)


This release requires the following software components and tools:

Device Support

Evaluation Boards

Fixed Issues

ID Summary
SL_WIFI_R3-1644 AP is not detected when Extended Capabilities IE is more than 10 bytes
SL_WIFI_R3-1635 CC313X stuck in high current state for long periods of time leading to fast battery drain

Known Issues

ID Summary
SL_WIFI_R3-1610 WPA2_PLUS Profile isn't transient mode after connection to AP
SL_WIFI_R3-1520 Trying to change device role during active scan might fail
SL_WIFI_R3-1479 Device extended scan: Uni-cast cipher in the a WEP scan result is shown incorrectly
SL_WIFI_R3-1254 gethostbyname6(<“IPv6 address”>) with explicit IP address return error
SL_WIFI_R3-1232 Smart Config WEP with key set as ascii is not working (only hex)
GENTHREEARCH-378 mDNS: Stop mdns and try to register service does not raise error
GENTHREEARCH-376 Setting connection policy with system persistent configuration disabled fails with unknown error code (-30964)
GENTHREEARCH-325 Reg Domain SUT: When STA is set to ‘World Wide’ country, it doesn't perform scanning on channels 12 & 13.
GENTHREEARCH-274 DHCP Server - Might assign the device's IP address to a client if it is in the address range
GENTHREEARCH-273 P2P IOP: Could not establish connection with Google Pixel mobile phone
GENTHREEARCH-272 SoftRoaming: Sometimes roaming fails when trigger set to EDGE type
GENTHREEARCH-269 Cannot configure (Scan) RSSI threashold for 5G, the 2.4 RSSI configuration override the results.
GENTHREEARCH-268 HTTP webserver not correctly handling multi-TCP-segment POST requests with user tokens
GENTHREEARCH-267 RX filtering promiscuous mode: filter for IP header protocol field doesn't always work
GENTHREEARCH-266 Update profile: updating a profile from (WEP to Open) and (WPA to Open) doesn't work
GENTHREEARCH-259 sl_WlanProfleUpdate() fails with enterprise when extended parameter supplied
GENTHREEARCH-177 (APUT GUI) DHCP Server: If start address and last address are the same, the configuration doesn't apply
GENTHREEARCH-158 Select: Setting unopened socket in SlFdSet_t rdListSet in select() does not return an error
GENTHREEARCH-137 HTTP Server GUI: Ipv6 global stateless not show as expected
GENTHREEARCH-9 mDNS: NetAppDnsGetHostByService does not return service name, can be retrived from NetAppGetServiceList.


This product’s version follows a version format,, where M is a single digit Major number, mm is 2 digit minor number, pp should be zero indicating official version and b is an unrestricted set of digits used as an incremented build counter.

Technical Support and Product Updates