Release Notes - SimpleLink Wi-Fi CC3220 service pack

Table of Contents


The SimpleLink™ Wi-Fi® CC3220 device is a single-chip microcontroller (MCU) with built-in Wi-Fi connectivity, created for the Internet of Things (IoT). The CC3220 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 CC3120/CC3220 devices. ServicePack must be applied both in production and development stage of the CC3120/CC3220 devices

File Notes
sp_3.13.0.3_2.0.0.0_2.2.0.6.bin ServicePack binary for UniFlash
sp_3.13.0.3_2.0.0.0_2.2.0.6.ucf ServicePack UCF for host driver API
sp_3.13.0.3_2.0.0.0_2.2.0.6.ucf.signed.bin ServicePack UCF signature

Version information

Component Version

Note: Upon successful ServicePack programming, version can be retrieved using ‘sl_DeviceGet()’ API, with SL_DEVICE_GENERAL_VERSION option.

What’s New

Fixed IOP issue - Some AP vendors learn the power save mode of the CC32xx from managment frames sent to the AP

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_R2-1555 Pass Bonjour tests version 1.5
SL_WIFI_R2-1553 Internal http server may corrupt external host sockets cause host driver a fatal abort

Known Issues

ID Summary
SL_WIFI_R2-1552 When trying to retrieve the DTIM period and the STA is disconnected from the AP, no error returned to host
SL_WIFI_R2-1495 Smart Config WEP with key set as ascii is not working (only hex)
SL_WIFI_R2-1446 RX filter : createfilter functionality does not work as excepted
SL_WIFI_R2-1405 GetSockOpt RCVBUF return wrong value
GENTWOARCH-520 Setting connection policy with system persistent configuration disabled fails with unknown error code (-30964)
GENTWOARCH-518 mDNS: NetAppDnsGetHostByService does not return service name, can be retrived from NetAppGetServiceList.
GENTWOARCH-119 RX filtering promiscuous mode: filter for IP header protocol field doesn't always work
GENTWOARCH-112 Legacy Rx statistics stop in AP role leaves the HW filters open for managment frames
GENTWOARCH-108 Consecutive calls to sl_WlanGetNetworkList in AP mode might cause back to back scans
GENTWOARCH-104 DHCP Server - Might assign the device's IP address to a client if it is in the address range
GENTWOARCH-24 When using secured content delivery, cannot program files over 65KB


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