>>21726903
It's not that, it's just that there's no command in rom for baud change. Or if there is, i couldn't find it.
It's not that, it's just that there's no command in rom for baud change. Or if there is, i couldn't find it.
# M0R1 Series Wi-Fi Module MQTT Transparent Transmission Version Notes
## 1. Wi-Fi Firmware Download
**MQTT Version Firmware Download Address: [Click to View](http://mqlinks.tpddns.cn:1888/DirectoryLister/?dir=WIFI\M0R1_RDA5981\firmware\mqtt)**
**Multi-Function Version Firmware Download Address: [Click to View](http://mqlinks.tpddns.cn:1888/DirectoryLister/?dir=WIFI\M0R1_RDA5981\firmware\at_uart)**
## 2. Version Notes
### Release Date: October 18, 2021 Version Number: Mbedos515_V21_0430.011
1. Optimized the connection speed of the Alibaba Cloud IoT Suite
2. Now supports querying Alibaba Cloud configurations
3. Added the ability to save configurations to factory defaults
### Release Date: September 21, 2021 Version Number: Mbedos515_V21_0430.010
1. Added AP network configuration interface functionality
2. Optimized AIRKISS network configuration speed
### Release Date: August 1, 2021 Version Number: Mbedos515_V21_0430.009
1. Optimized MQTT packet stability
### Release Date: July 17, 2021 Version Number: Mbedos515_V21_0430.008
1. Resolved issues with receiving large amounts of data from the serial port over the network
### Release Date: March 15, 2021 Version Number: Mbedos515_V21_0430.007
1. Supports AP network configuration
2. Adds slow serial port commands to ensure the integrity of MQTT packets
3. Starting with version 007, there are two versions: one that remains the same as before, and one that includes GPIO port reset configuration and access to airkiss network configuration
### Release Date: March 15, 2021 Version Number: Mbedos515_V21_0430.006
1. Improves connection stability across MQTT platforms
2. Improves MQTT communication responsiveness
### Release Date: February 23, 2021 Version Number: Mbedos515_V21_0430.005
1. Updates the SDK package to Mbedos515_V21_0430
### Release Date: January 15, 2021 Version: Mbedos515_V20_0712.004
1. Fixed an issue where only setting the three Alibaba Cloud elements failed to connect to the server.
2. Added two super commands for users to configure parameters for the Alibaba Cloud IoT Suite and MQTT server.
### Release Date: January 9, 2021
Version: Mbedos515_V20_0712.003
1. Added the AT+MRD command to set the "Retained" attribute of the MQTT publish function: AT+MRD=on turns on the "Retained" attribute.
### Release Date: January 3, 2021 Version Number: Mbedos515_V20_0712.002
Starting in 2021, the SDK version for version M0R1 will be updated to Mbedos515_V20_0712. Major updates compared to previous versions include:
1. Fixed a memory leak during the scan process;
2. Fixed an issue where some phones failed to connect to hotspots;
3. Fixed an issue where link loss could not be detected in sniffer mode;
4. Fixed an issue causing out-of-bounds exceptions;
5. Fixed an issue with beacon hopping in STA+AP mode;
6. Fixed an issue with deduplication timers;
Version 002 adds the following:
1. Fixed the pinout feature in the previous version M0E1.
2. When configured in APSTA mode, AP connections will work even if STA connections are unavailable.
### Release Date: December 22, 2020 Version Number: Mbedos515_V1.3.7.001
1. MQTT transparent transmission version released
