Product Change Notification
PCN 03092026-001
Date: March 9, 2026
Product Change Notification
Software Release Notes
MultiTech xDot® and mDot™ Long Range LoRa® Modules
New AT Command Firmware v4.1.38
I. Product Change Notification (PCN) Number
PCN 03092026-001
II. Summary
MultiTech announces a new firmware release for xDot® and mDot™ LoRaWAN® embedded modules.
III. Impacted Products
All MultiTech mDot™ and xDot® classic modules and developer kits.
| UPC | Order Part Number | Description |
|---|---|---|
| 789407363467 | MTXDOT-AU1-A00-100 | AU915 MHz LoRa Module UFL/TRC (100 Pk) |
| 789407363474 | MTXDOT-AU1-A00-1 | AU915 MHz LoRa Module UFL/TRC (1 Pk) |
| 789407363481 | MTXDOT-EU1-A00-100 | 868 MHz LoRa Module UFL/TRC (100 Pk) |
| 789407363498 | MTXDOT-EU1-A00-1 | 868 MHz LoRa Module UFL/TRC (1 Pk) |
| 789407363504 | MTXDOT-NA1-A00-100 | 915 MHz LoRa Module UFL/TRC (100 Pk) |
| 789407363511 | MTXDOT-NA1-A00-1 | 915 MHz LoRa Module UFL/TRC (1 Pk) |
| 789407363733 | MTXDOT-AU1-A01-100 | AU915 MHz LoRa Module TRC (100 Pk) |
| 789407363740 | MTXDOT-AU1-A01-1 | AU915 MHz LoRa Module TRC (1 Pack) |
| 789407363757 | MTXDOT-EU1-A01-100 | 868 MHz LoRa Module TRC (100 Pk) |
| 789407363771 | MTXDOT-NA1-A01-100 | 915 MHz LoRa Module TRC (100 Pk) |
| 789407366420 | MTXDOT-AS1-A00-100 | AS923 MHz LoRa Module UFL/TRC (100 Pk) |
| 789407366512 | MTXDOT-AS1-A00-1 | AS923 MHz LoRa Module UFL/TRC (1 Pk) |
| 789407366529 | MTXDOT-AS1-A01-100 | AS923 MHz LoRa Module TRC (100 Pk) |
| 789407366895 | MTXDOT-JP1-A00-100 | AS923 MHz LoRa Module UFL/TRC w/LBT (100 Pk) |
| 789407366901 | MTXDOT-JP1-A00-1 | AS923 MHz LoRa Module UFL/TRC w/LBT (1 Pk) |
| 789407370274 | MTXDOT-NA1-A00-1000 | 915 MHz LoRa Module UFL/TRC (1000 Pk) |
| 789407370281 | MTXDOT-NA1-A01-1000 | 915 MHz LoRa Module TRC (1000 Pk) |
| 789407370489 | MTXDOT-KR1-A00-100 | KR920 MHz LoRa Module UFL/TRC (100 PK) |
| 789407370496 | MTXDOT-KR1-A00-1 | KR920 MHz LoRa Module UFL/TRC (1 PK) |
| 789407370502 | MTXDOT-EU1-IN1-A00-100 | IN865 MHz LoRa Module UFL/TRC (100 PK) |
| 789407370519 | MTXDOT-EU1-IN1-A00-1 | IN865 MHz LoRa Module UFL/TRC (1 PK) |
| 789407363443 | MTMDK-XDOT-NA1-A00 | Dot Micro Developer Kit, includes 915 MHz xDot |
| 789407363450 | MTMDK-XDOT-EU1-A00 | xDot Micro Developer Kit, includes 868 MHz xDot |
| 789407363528 | MTMDK-XDOT-AU1-A00 | xDot Micro Developer Kit, includes AU915 MHz xDot |
| 789407365768 | MTMDK-XDOT-JP1-A00 | xDot Micro Developer Kit, includes AS923 MHz xDot w/LBT |
| 789407366536 | MTMDK-XDOT-AS1-A00 | xDot Micro Developer Kit, includes AS923 MHz xDot |
| 789407367014 | MTMDK-XDOT-KR1-A00 | xDot Micro Developer Kit, includes IN865 MHz xDot |
| 789407370526 | MTMDK-XDOT-EU1-IN1-A00 | xDot Micro Developer Kit, includes IN865 MHz xDot |
| 789407374784 | MTXDOT-AU1-A00-1000 | AU915 MHz LoRa Module UFL/TRC (1000 Pk) |
| 789407374302 | MTXDOT-EU1-A00-1000 | 868 MHz LoRa Module UFL/TRC (1000 Pk) |
| 789407376573 | MTXDOT-AS1-A00-310-100 | AS923 MHz LoRa Module UFL/TRC (100 Pk) Firmware 3.1.0 |
| 789407373985 | MTXDOT-AU1-A00-310-100 | AU915 MHz LoRa Module UFL/TRC (100 Pk) Firmware 3.1.0 |
| 789407378027 | MTXDOT-AU1-A00.R1-1000 | AU915 MHz LoRa Module UFL/TRC (1000 Pk) |
| 789407378034 | MTXDOT-AU1-A00.R1-1 | AU915 MHz LoRa Module UFL/TRC (1 Pk) |
| 789407378751 | MTXDOT-NA1-A01-1000-321 | 915 MHz LoRa Module TRC (1000 Pk) |
| 789407378782 | MTXDOT-NA1-A00-100-321 | 915 MHz LoRa Module UFL/TRC (100 Pk) |
| 789407360909 | MTDOT-868-X1-SMA-50 | 868 MHz X1 LoRa SMA (50 Pk) |
| 789407360091 | MTDOT-868-X1-SMA-1 | 868 MHz X1 LoRa SMA (1 Pk) |
| 789407360893 | MTDOT-868-X1-UFL-50 | 868 MHz X1 LoRa UFL (50 Pk) |
| 789407360107 | MTDOT-868-X1-UFL-1 | 868 MHz X1 LoRa UFL (1 Pk) |
| 789407360947 | MTDOT-868-M1-UFL-100 | 868 MHz SMT LoRa UFL (100 Pk) |
| 789407360121 | MTDOT-868-M1-UFL-1 | 868 MHz SMT LoRa UFL (1 Pk) |
| 789407360916 | MTDOT-868-M1-TRC-100 | 868 MHz SMT LoRa RF Pad (100 Pk) |
| 789407360138 | MTDOT-868-M1-TRC-1 | 868 MHz SMT LoRa RF Pad (1 Pk) |
| 789407360732 | MTDOT-868-X1P-SMA-1 | 868 MHz X1 LoRa SMA w/Programming Header (1 Pk) |
| 789407360862 | MTDOT-915-X1-SMA-50 | 915 MHz X1 LoRa SMA (50 Pk) |
| 789407360053 | MTDOT-915-X1-SMA-1 | 915 MHz X1 LoRa SMA (1 Pk) |
| 789407360886 | MTDOT-915-X1-UFL-50 | 915 MHz X1 LoRa UFL (50 Pk) |
| 789407360060 | MTDOT-915-X1-UFL-1 | 915 MHz X1 LoRa UFL (1 Pk) |
| 789407360930 | MTDOT-915-M1-UFL-100 | 915 MHz SMT LoRa UFL (100 Pk) |
| 789407360077 | MTDOT-915-M1-UFL-1 | 915 MHz SMT LoRa UFL (1 Pk) |
| 789407360923 | MTDOT-915-M1-TRC-100 | 915 MHz SMT LoRa RF Pad (100 Pk) |
| 789407360084 | MTDOT-915-M1-TRC-1 | 915 MHz SMT LoRa RF Pad (1 Pk) |
| 789407360749 | MTDOT-915-X1P-SMA-1 | 915 MHz X1 LoRa SMA w/Programming Header (1 Pk) |
| 789407370441 | MTDOT-915-X1P-SMA-50 | 915 MHz X1 LoRa SMA w/Programming Header (50 Pk) |
| 789407364143 | MTDOT-915-AU-M1-UFL-100 | AU915 MHz SMT LoRa UFL (100 Pk) |
| 789407364150 | MTDOT-915-AU-M1-UFL-1 | AU915 MHz SMT LoRa UFL (1 Pk) |
| 789407364167 | MTDOT-915-AU-M1-TRC-100 | AU915 MHz SMT LoRa RF Pad (100 Pk) |
| 789407364174 | MTDOT-915-AU-M1-TRC-1 | AU915 MHz SMT LoRa RF Pad (1 Pk) |
| 789407364181 | MTDOT-915-AU-X1-UFL-50 | AU915 MHz X1 LoRa UFL (50 Pk) |
| 789407364198 | MTDOT-915-AU-X1-UFL-1 | AU915 MHz X1 LoRa UFL (1 Pk) |
| 789407364204 | MTDOT-915-AU-X1-SMA-50 | AU915 MHz X1 LoRa SMA (50 Pk) |
| 789407364211 | MTDOT-915-AU-X1-SMA-1 | AU915 MHz X1 LoRa SMA (1 Pk) |
| 789407364228 | MTDOT-915-AU-X1P-SMA-1 | AU915 MHz X1 LoRa SMA w/Programming Header (1 Pk) |
| 789407365775 | MTDOT-923-JP1-X1P-SMA-1 | AS923 MHz x1 LoRa SMA w/Programming Header w/LBT (1 Pk) |
| 789407366338 | MTDOT-923-AS1-X1-SMA-50 | AS923 LoRa SMA (50 Pk) |
| 789407366345 | MTDOT-923-AS1-X1-SMA-1 | AS923 LoRa SMA (1 Pk) |
| 789407366413 | MTDOT-923-AS1-X1P-SMA-1 | AS923 MHz X1 LoRa SMA w/Programming Header (1 Pk) |
| 789407366352 | MTDOT-923-AS1-X1-UFL-50 | AS923 MHz X1 LoRa UFL (50 Pk) |
| 789407366369 | MTDOT-923-AS1-X1-UFL-1 | AS923 MHz X1 LoRa UFL (1 Pk) |
| 789407366406 | MTDOT-923-AS1-M1-UFL-100 | AS923 MHz SMT LoRa UFL (100 Pk) |
| 789407366390 | MTDOT-923-AS1-M1-UFL-1 | AS923 MHz SMT LoRa UFL (1 Pk) |
| 789407366376 | MTDOT-923-AS1-M1-TRC-100 | AS923 SMT LoRa RF Pad (100 Pk) |
| 789407366383 | MTDOT-923-AS1-M1-TRC-1 | AS923 SMT LoRa RF Pad (1 Pk) |
| 789407367021 | MTDOT-920-KR1-X1P-SMA-1 | KR920 MHz X1 LoRa SMA w/Programming Header (1 Pk) Korea |
IV. Overview of Change
Firmware changes from version 4.1.36 to 4.1.38
4.1.38
Version Info
- mbed-os 6.8.0
- library - v4.1.36
- mts-lora - v4.1.24
- LoRaWAN - 1.0.4
- Regional Parameters - RP2 1.0.3
- Fragmentation - v1.0
- Multicast Setup - v2.0
- mDot 1.1.0
- xDot 1.1.2
- xDot: US915,AU915,EU868,AS923,AS923-2,AS923-3,AS923-4,AS923-JAPAN
- mDot: US915,AU915,EU868,AS923,AS923-2,AS923-3,AS923-4,AS923-JAPAN,KR920,IN865,RU864
- Fix for join backoff after 24 hours, reset time-on-air after each 24-hour period to allow more joins per day.
- Fixed RX2 SF12 would miss packets at max size if confirmed uplinks were sent, ACK missed occurred before packet was received
- Adjust ACK Timeout dynamically for SF12/SF11/SF10 BW125 in AS923,EU868,KR920,IN865 plans
V. Key Dates
Implementation:
- Firmware available for download now at MultiTech Developer Resources » Downloads
- Modules from the factory will now ship with 4.1.38 firmware
VI. Suggested Action Plan
Customers- Review the information in this PCN and forward to others within your organization who are actively involved with the development of IoT applications using the MultiTech embedded modules.
- Consider downloading the firmware available on the MultiTech website to check compatibility with existing deployments.
- Forward this announcement to others within your organization who are actively involved in the sale or support of LoRa-enabled modules.
- Notify existing customers of this change.
VII. Additional Information
If you have any questions or require additional information on this Product Change Notification, please contact your MultiTech sales representative or visit the resources listed below:
World Headquarters - U.S.
+1 (763) 785-3500 | sales@multitech.com
EMEA - UK:
+(44) 118 959 7774 | sales@multitech.co.uk
MultiTech Website:
www.multitech.com
MultiTech Support:
https://multitech.com/product-support/