LGT92 Firmware Change Log

Note: Explanation for feature detail can be found in manual. 



Important: Always run AT+FDR after a firmware upgrade. 
v1.6.7

* Fixed a vulnerability in the identification GPS module


v1.6.6

* The software can automatically identify the GPS module currently in use and automatically correspond to the PDOP of the device.



v1.6.5

* Set OTAA RX2DR=0 by default, EU868 Frequency



v1.6.4

* Update to LoRaWAN stack DR-LWS-005.(http://www.dragino.com/downloads/downloads/LoRa_End_Node/DR-LWS/changelog) 

* User can cancel Alarm by push the Alarm button

* Add Altitude and HDOP when AT+SGM=0

* Almost All AT Command has downlink command now.



v1.6.2

* User can set RX2DR for OTAA Join process now.  For KPN, user need to set RX2DR=0 to join this network. 

* Change LED status. LED will flash three different color during boot. 



v1.6.1

* Add Auto AT+FDR when switch from different version. 



v1.6.0 -- 2020-May-19

* Add Watchdog

* Update to LoRaWAN stack DR-LWS-003.(http://www.dragino.com/downloads/downloads/LoRa_End_Node/DR-LWS/changelog) 

* Add KZ865 frequency band. 





v1.5.3 -- 2020-Jan-8

* Fix hang bug in Alarm mode

* Add AT Command (AT+PDOP) to adjust PDOP (Position Dilution of Precision), lower value has higher accuracy and more time to fix (recommend 2.5) 

* Add AT Command to set navigation mode

* Add AT Command to set HWVER. 

* Improve the console output

* Change Alarm behavior: 

  Previous: Once Alarm is active, transmit an empty packet immediately, then wait for one minute, then transmit a location packet.

  Current: Once Alarm is active, transmit an empty packet immediately, then transmit a location packet

* Modify AT+FTIME to support continuously tracking. If AT+FTIME=0, the GPS module will be always powered. Device in this mode will be of higher power consumption.





v1.5.2:

* Update to LoRaWAN stack DR-LWS-002. Fix some bugs reference to LoRaWAN protocol. 



v1.5:

The v1.5 has a lot of change compare with the previous version. After upload to v1.5, user need to run AT+FDR to reset it to factory default for proper use. 

*Add AT+FTIME to set GPS fix timeout

*Set location info to 6 decimal for higher accuracy, Payload structure change. 

*Improve positioning accuracy by change the GPS fix logic. 

*Support downlink command for change of : AT+CHE, AT+CONFIRM, AT+MD

*Add AT+LON to enable/disable LED flash. 

*Add feature, so the tracker will send a uplink packet immediately when Alarm is active.

*Add movement detect feature. 





v1.4:

* Default settings change: a) for AU915 & US915 CHE=2; b)TDC=5 minutes

* If voltage is lower than 2.8v, GPS won't work, device will send a special packet. 

* Add Alarm flag

* Add AT+CFG command. Print all current config

* Add Downlink commands. 

* Adjust work flow. 

* Fix some bugs like AT command input issue during gps fixing. 

* Add AT+SGM=1