MCUXpresso SDK Documentation

Version: 26.09.00 26.06.00-lts 26.03.00 25.12.00 latest

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IW611/IW612 release notes

Package information

• SDK version: 26.09.00

Parent topic: IW611/IW612 release notes

Version information

• Wireless SoC: IW611/IW612

• Wi-Fi and Bluetooth/Bluetooth LE firmware version: 18.99.8.p141

  • 18 - Major revision

  • 99 - Feature pack

  • 8 - Release version

  • p141 - Patch number

Parent topic: IW611/IW612 release notes

Host platform

• All i.MX RT platforms running FreeRTOS except i.MX RT1060 EVKA and i.MX RT1064 EVK

• Host interfaces

  • Wi-Fi over SDIO (SDIO 2.0 support, SDIO clock frequency: 50 MHz)

  • Bluetooth/Bluetooth LE over UART

  • 802.15.4 over SPI (IW612 only)

• Test tools

  • iPerf (version 2.1.9)

Parent topic: IW611/IW612 release notes

Wi-Fi and Bluetooth certification

The Wi-Fi and Bluetooth certification is obtained with the following combinations.

WFA certifications

• STA | 802.11n

• STA | PMF

• STA | FFD

• STA | SVD

• STA | WPA2

• STA | WPA3

• STA | 802.11ac

• STA | 802.11ax

• STA | QTT

Refer to 6.

Note: This release supports STAUT only certifications.

Parent topic: Wi-Fi and Bluetooth certification

Bluetooth controller certification

QDID: refer to 4.

Note: QDID upgrade to Bluetooth Core Specification Version 5.4 is in progress.

Parent topic: Wi-Fi and Bluetooth certification

Parent topic: IW611/IW612 release notes

Wi-Fi throughput

Throughput test setup

• Environment: Shield Room - Over the Air

• Access Point: Asus AX88u

• DUT: IW612 Murata (Module: 2EL M.2) with EVK-MIMXRT1060 EVKC platform

• DUT Power Source: External power supply

• Client: Apple MacBook Air

• Channel: 6 | 36

• Wi-Fi application: wifi_wpa_supplicant

• Compiler used to build application: armgcc

• Compiler Version gcc-arm-none-eabi-13.2

• iPerf commands used in test:

TCP TX

iperf -c <remote_ip> -t 60

TCP RX

iperf -s

UDP TX

iperf -c <remote_ip> -t 60 -u -B <local_ip> -b 120

Note: The default rate is 100 Mbps.

UDP RX

iperf -s -u -B <local_ip>

Note: Read more about the throughput test setup and topology in 2

The throughput numbers are captured with default configurations using wifi_wpa_supplicant sample application.

Parent topic: Wi-Fi throughput

iPerf host configuration and impact on throughput

To get the highest throughput, the throughput values shown in STA throughput and Mobile AP throughput are measured with the maximum values of the default host configuration macros. STA and AP throughput captured with the minimum values of the host configuration macros shows the throughput numbers obtained when using the minimum values of the host configuration macros. The macro values are defined in lwipopts.h file.

The table below lists the minimum and maximum values of the host configuration macros.

Values of the host configuration macros

Parameter	Maximum value	Minimum value
TCPIP_MBOX_SIZE	96	32
DEFAULT_RAW_RECVMBOX_SIZE	32	12
DEFAULT_UDP_RECVMBOX_SIZE	64	12
DEFAULT_TCP_RECVMBOX_SIZE	64	12
TCP_MSS	1460	536
TCP_SND_BUF	24 * TCP_MSS	2 * TCP_MSS
MEM_SIZE	319160	41,080
TCP_WND	15 * TCP_MSS	10 * TCP_MSS
MEMP_NUM_PBUF	20	10
MEMP_NUM_TCP_SEG	96	12
MEMP_NUM_TCPIP_MSG_INPKT	80	16
MEMP_NUM_TCPIP_MSG_API	80	8
MEMP_NUM_NETBUF	32	16

STA and AP throughput captured with the minimum values of the host configuration macros

STA mode throughput - HE Mode | 5 GHz Band | 80 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	7	18	111	124
WPA2-AES	7	18	110	124
WPA3-SAE	6	18	110	124

Mobile AP mode throughput - HE Mode | 5 GHz Band | 80 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	2	19	93	127
WPA2-AES	2	19	105	126
WPA3-SAE	2	19	104	132

Parent topic: iPerf host configuration and impact on throughput

Parent topic: Wi-Fi throughput

STA throughput

External AP: Asus AX88u

STA mode throughput - BGN Mode | 2.4 GHz Band | 20 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	46	46	53	62
WPA2-AES	54	55	70	72
WPA3-SAE	53	55	70	72

STA mode throughput - BGN Mode | 2.4 GHz Band | 40 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	77	77	130	131
WPA2-AES	80	79	130	129
WPA3-SAE	80	79	130	129

STA mode throughput - AN Mode | 5 GHz Band | 20 MHz (HT)

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	41	48	63	64
WPA2-AES	56	58	71	75
WPA3-SAE	56	58	71	75

STA mode throughput - AN Mode | 5 GHz Band | 40 MHz (HT)

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	78	81	129	134
WPA2-AES	78	80	129	133
WPA3-SAE	77	80	129	133

STA mode throughput - VHT Mode | 5 GHz Band | 20 MHz (VHT)

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	45	54	71	76
WPA2-AES	56	58	71	75
WPA3-SAE	56	58	71	75

STA mode throughput - VHT Mode | 5 GHz Band | 40 MHz (VHT)

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	92	86	153	157
WPA2-AES	89	91	153	157
WPA3-SAE	90	87	153	156

STA mode throughput - VHT Mode | 5 GHz Band | 80 MHz (VHT)

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	120	93	233	226
WPA2-AES	114	104	233	226
WPA3-SAE	113	104	233	226

STA mode throughput - HE Mode | 2.4 GHz Band | 20 MHz (HE)

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	69	53	95	102
WPA2-AES	63	65	93	95
WPA3-SAE	66	68	101	99

STA mode throughput - HE Mode | 2.4 GHz Band | 40 MHz (HE)

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	97	88	214	210
WPA2-AES	99	88	204	209
WPA3-SAE	95	86	216	210

STA mode throughput - HE Mode | 5 GHz Band | 20 MHz (HE)

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	59	51	93	127
WPA2-AES	60	51	91	126
WPA3-SAE	60	51	91	127

STA mode throughput - HE Mode | 5 GHz Band | 40 MHz (HE)

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	103	90	185	228
WPA2-AES	102	91	180	228
WPA3-SAE	101	88	180	228

STA mode throughput - HE Mode | 5 GHz Band | 80 MHz (HE)

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	123	97	233	226
WPA2-AES	123	70	233	225
WPA3-SAE	126	70	233	225

Parent topic: Wi-Fi throughput

Mobile AP throughput

External client: Apple MacBook Air

Mobile AP mode throughput - BGN Mode | 2.4 GHz Band | 20 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	44	45	58	57
WPA2-AES	43	44	60	56
WPA3-SAE	43	44	59	56

Mobile AP mode throughput - BGN Mode | 2.4 GHz Band | 40 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	69	44	122	114
WPA2-AES	68	43	120	113
WPA3-SAE	68	43	120	112

Mobile AP mode throughput - AN Mode | 5 GHz Band | 20 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	46	49	63	61
WPA2-AES	46	49	63	60
WPA3-SAE	46	49	63	60

Mobile AP mode throughput - AN Mode | 5 GHz Band | 40 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	75	78	127	113
WPA2-AES	74	78	127	112
WPA3-SAE	75	78	127	112

Mobile AP mode throughput - VHT Mode | 5 GHz Band | 20 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	50	52	71	71
WPA2-AES	49	51	71	71
WPA3-SAE	50	51	71	71

Mobile AP mode throughput - VHT Mode | 5 GHz Band | 40 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	90	90	152	141
WPA2-AES	89	89	148	139
WPA3-SAE	89	89	144	140

Mobile AP mode throughput - VHT Mode | 5 GHz Band | 80 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	116	110	224	214
WPA2-AES	116	110	219	214
WPA3-SAE	115	110	219	214

Mobile AP mode throughput - HE Mode | 2.4 GHz Band | 20 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	54	48	82	89
WPA2-AES	52	62	81	113
WPA3-SAE	51	62	81	112

Mobile AP mode throughput - HE Mode | 2.4 GHz Band | 40 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	83	76	133	180
WPA2-AES	62	74	132	132
WPA3-SAE	62	72	130	133

Mobile AP mode throughput - HE Mode | 5 GHz Band | 20 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	60	52	81	89
WPA2-AES	60	51	80	90
WPA3-SAE	60	51	80	89

Mobile AP mode throughput - HE Mode | 5 GHz Band | 40 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	98	96	150	209
WPA2-AES	97	95	147	214
WPA3-SAE	97	95	147	214

Mobile AP mode throughput - HE Mode | 5 GHz Band | 80 MHz

Protocol	TCP (Mbit/s)	TCP (Mbit/s)	UDP (Mbit/s)	UDP (Mbit/s)
Direction	TX	RX	TX	RX
Open Security	116	107	222	216
WPA2-AES	115	106	217	216
WPA3-SAE	113	106	217	217

Parent topic: Wi-Fi throughput

Parent topic: IW611/IW612 release notes

EU conformance tests

• EU Adaptivity test - EN 300 328 v2.1.1 (for 2.4 GHz)

• EU Adaptivity test - EN 301 893 v2.1.1 (for 5 GHz)

Parent topic: IW611/IW612 release notes

Bug fixes and/or feature enhancements

Firmware version: 18.99.2.p7.19

Component	Description
-	NA

Parent topic: Bug fixes and/or feature enhancements

Firmware version: 18.99.2.p7.19 to 18.99.2.p49.9

Component	Description
-	NA

Parent topic: Bug fixes and/or feature enhancements

Firmware version: 18.99.2.p49.9 to 18.99.2.p155

Component	Description
Bluetooth	Audio lost occurs due to periodic adv sync lost, during 2 BIS 44.1kHz unencrypted streams with 1M PHY configuration. BIS sync loss may occur in long audio streaming sessions.

Parent topic: Bug fixes and/or feature enhancements

Firmware version: 18.99.2.p155 to 18.99.2.p66.30

Component	Description
Wi-Fi	802.11R Fast BSS roaming works only with hostapd and does not work with standard APs (supporting 11R)
Bluetooth	DUT is not able to sustain a connection with the remote device that does extended advertisement with coded PHY configuration. When 2 CIS streams are active, after the first device disconnects followed by the second device disconnecting, the second peripheral device hangs. Audio Play/Pause does not work in BIS case.

Parent topic: Bug fixes and/or feature enhancements

Firmware version: 18.99.2.p66.30 to 18.99.3.p10.5

Component	Description
Wi-Fi	STAUT not sending Neighbor Advertisement packet after receiving Neighbor Solicitation packet from Ex-AP. Antenna selection time exceeds configured evaluation time
Bluetooth	When DUT works as CIS source and CIS Offset is 612us, high packet drops observed which affects the audio streaming. For BIS Source Use Cases, Periodic Interval and ISO Interval should be multiple of each other value. In 1-CIS and 2-CIS, Continuous Audio Glitches are observed with 96 kbps bit rate.

Parent topic: Bug fixes and/or feature enhancements

Firmware version: 18.99.3.p10.5 to 18.99.3.p17.9

Component	Description
Wi-Fi	After performing independent reset (out-of-band mode), the STAUT fails to connect to the external AP via wlan-connect command, observed command timeout 0x107 error.
Bluetooth	Audio glitches observed with Google Pixel 7 Pro streaming audio after CIS is established with DUT. During Call Gateway (CG) / Call Terminal (CT) Use Case, the firmware periodically sends NULL PDU, which results in frequent Audio Glitch on both CG and CT sides. Heavy audio glitches observed with CIS SRC Google Pixel 7 Pro Continuous audio glitches observed in 1 CIS and 2 CIS for 48_3 and 48_4 config.

Parent topic: Bug fixes and/or feature enhancements

Firmware version: 18.99.3.p17.9 to 18.99.3.p21.154

Component	Description
Wi-Fi	STAUT fail to ping AP backend machine when connected with DFS channel and DUTSTA went in bad state.
Bluetooth	CIS Sink frequently fails to acknowledge CIS Source TX PDU.

Parent topic: Bug fixes and/or feature enhancements

Firmware version: 18.99.3.p21.154 to 18.99.3.p23.16

Component	Description
-	NA

Parent topic: Bug fixes and/or feature enhancements

Firmware version: 18.99.3.p23.16 to 18.99.3.p25.11

Component	Description
Bluetooth	Packet lost observed in CIS case, which causes audio noise.

Parent topic: Bug fixes and/or feature enhancements

Firmware version: 18.99.3.p25.11 to 18.99.3.p26.10

Component	Description
Wi-Fi	During legacy roaming when the “Link Lost” observed the DUTSTA fails to roam
Wi-Fi	During the automated testing of the channel performance, a system hang can occur, with the error message “.sdio_drv_write failed”.

Parent topic: Bug fixes and/or feature enhancements

Firmware version: 18.99.3.p26.10 to 18.99.3.p27.1

Component	Description
Wi-Fi	Enabled mbedtls 3.x

Parent topic: Bug fixes and/or feature enhancements

Firmware version: 18.99.3.p27.10 to 18.99.8.p10

Component	Description
Wi-Fi	Fail to set band to 2.4G in wifi_test_mode application Enabled mbedtls 3.x

Parent topic: Bug fixes and/or feature enhancements

Firmware version: 18.99.8.p10 to 18.99.8.p68

Component	Description
Wi-Fi	Duplicate Packet Reception in JP Region due to Missing BA/ACK Transmission Fixed STA setting wrong primary channel when external AP has incorrect secondary channel offset field. Fixed WPA3 STA datapath ping stuck until next reassociation; fixed DUT TX throughput dropping to 0 or getting stuck in pre-sleep state under stress. Fixed scan results taking more than 5 seconds to appear in AP+STA mode. Fixed RSSI_INFO (0xa4) command timeout when DUT is left idle for extended periods in AP+STA mode.
Bluetooth	Sequential Removal of CIS Handles as per current Controller implementation i.e CIS Disconnection sequence should be in sequence => CIS - 4,3,2,1 While 4-CIS streaming,audio glitches observed on all CIS SINK with Samsung Galaxy buds Fixed missing Disconnect Complete event from controller causing host to get stuck after ACL link disconnection. Added mechanism to detect BT slave link FST on odd-numbered offset Fixed firmware crash observed after eSCO connection complete event. Fixed BTC ACL link disconnection due to CCM counter not being incremented during encryption Fixed BLE and BTC power backoff not working when BTU power control is disabled in MFG firmware.

Parent topic: Bug fixes and/or feature enhancements

Firmware version: 18.99.8.p68 to 18.99.8.p141

Component	Description
Wi-Fi	The device connects successfully but fails to roam when signal degrades. Fixed an issue where DHCP renewal was not triggered when roaming between independent APs sharing the same SSID Fixed an issue where ping responses failed on the first uAP BSS start in 2.4 GHz Fixed an issue where the DUT failed to fall back to legacy roaming after 802.11k/11v roaming returned no usable target AP
Bluetooth	Fixed an issue where the BR/EDR Coex shell app incorrectly initialized the Nighthawk (IW610) module and downloaded firmware instead of IW612, causing NB UART firmware download to fail with “HDR SIG not found” (-22) and subsequently WLAN initialization to fail. Fixed a sporadic LE RX degradation issue , where GATT indication delays exceeding 500 ms were observed due to excessive retransmissions in a concurrent BTC ACL + eSCO + BLE scatternet scenario. Fixed a issue where DUT sends HCI Hardware Error (0x22) Fixed a issue where DUT establishes LE connections with two devices using same connection handle Fixed a issue where Controller will choose connection interval that won’t collide with eSCO link paremeters.

Parent topic: Bug fixes and/or feature enhancements

Parent topic: IW611/IW612 release notes

Known issues

Component	Description
NA

Parent topic: IW611/IW612 release notes