Enhancements:

•  Support for SNI (Server Name Indication) when using MQTT.
•  RTCU LX2: Improved and faster cellular reconnection when the external SIM card is removed and re-inserted.
•  pmVibration() can only be used when the Accelerometer and Motion sensor interfaces are not open.
•  Improved handling of boardSupplyType() when transitioning from AC to Battery and back.

Bug Fixes:

•  DHCP settings for LAN/WLAN were not always retrieved.
•  The DHCP server was, in some cases, not disabled even if configured so.
•  gnssDREnable did not work on the RTCU NX-200 DR.
•  RTCU LX5: Negative temperatures were misreported.
•  Possible device crash related to Bluetooth LE.
•  + other minor bug fixes and enhancements.

Enhancements:

•  High-speed USB Programming Port support. 10+ times faster device communication!
   Requires installation of the new RTCU USB Programming Port V5.00 driver.

Bug Fixes:

•  A defective SD-CARD could result in the device not being able to boot.
•  Unreliably 1-wire device communication in a "busy" device with many threads.

Enhancements:

•  RTCU LX2 pro: Enhanced performance and stability (Upgrade is recommended).
•  Revised list of TLS certificates.
•  Support for SNI (Server Name Indication) when using TLS.

Bug Fixes:

•  serSetHandshake did not work.
•  gnssSatellitesInView did not always include all satellites in view.
•  Using 'ld' with PCT did not include uncounted pulses.
•  LX devices: Incorrect time reported after returning from pmSuspend.
•  LX2: The device stops connecting to the RCH after some time.
•  LX2: gpsGetAntennaStatus did not work reliably.
•   + other minor bug fixes and enhancements.

Enhancements:

•  New function accVibrationSetWakeup to wake-up on vibration using pmSuspend.
•  New function ftpSendOpts to send options to the FTP server.
•  boardGetProfileX index 27 now returns information about the the GNSS type present in the device.
•  Support for wakeup on Modus communication using pmWaitEvent and serSetWakeup.

Bug Fixes:

•  PowerDown / pmPowerdown did not complete when GNSS / Cellular turned on. The device ending up resetting.
•  Wrong device time returned after exiting from power saving mode.
•   + other minor bug fixes and enhancements.

Enhancements:

•  Enhanced GNSS antenna detection on the RTCU LX5.
•  Better processing of device reset when calling boardReset and pressing the reset button.

Bug Fixes:

•  Frequently calling modbusOpen / modbusOpenX / modbusClose could result in a complete RS485 lockup.
•  pmExternalPower did not work correctly on devices where this functionality is unsupported
•  pmWaitEvent waiting for serial port activity did not work on the RTCU LX4 and the RTCU LX5.
•  clockSetWakeup did not work as expected, except for an absolute time.
•   + other minor bug fixes and enhancements.

Enhancements:

•  Improved backward compatibility with X32/NX32 applications.
   Possible fix to unexplainable cases of device fault with "Illegal string-id referenced" or "Reference-decrement on no-reference dynamic string detected".
•  Enhanced device performance and stability.
   Possible fix to unexplainable cases of device faults or unexpected resets.

Enhancements:

•  Enhanced support for Dual-SIM card devices with advanced APN settings.
•  Faster establishment of a data connection (GPRS).

 Bug Fixes:

•  Sending a text SMS with a length of more than 155 characters could reset the device.

 Bug Fixes:

•  Possible Datalogger corruption on the latest generation of devices.
•  + other minor bug fixes.

•  Potential FRAM persistent memory corruption after powerdown.
•  RTCU LX4 pro issues:
  •  Digital input update latency was too long.
  •  Spurious "Enter code" message on the LCD display at startup.
  •  Keypad did not work after upgrade to S1.05.00.
  •  Application control of the LCD display backlight did not work.
•  pmPowerDown did not always work when the timeout period was short.
•  Initial debug messages from the application were sometimes not shown in the RTCU IDE.
•  + other minor bug fixes.

•  Comprehensive REST and HTTP API with functionality to work both as a server and client.
•  JSON API with advanced functionality to create and manipulate JSON objects.
•  Powerful String template support.
•  Full support for static strings with a length of up to 16384 characters.
•  Mobile data communication statistics are now supported on NX/LX devices.
•  Faster WLAN connection to certain APs.
•  + other minor improvements.

 Bug Fixes:

•  Pressing the reset button to enter recovery mode did not work when running from the battery. 
•  mqttWaitEvent could hang if the connection was closed.
•  The primary/secondary Modbus I/O Extension Net port did not work on the RTCU LX4.
•  + other minor bug fixes.

Enhancements:

•   Much faster and improved handling of certificates.

 Bug Fixes:

•  Possible crash when playing audio over the cellular interface.
•  Spurios crash when operating in Modbus slave mode.
•  gsmPower could hang if the APN was incorrect.

   

•  Flexible debounce support when using high-speed PCT inputs.
•  Enhanced boot safety and recovery.

 Bug Fixes:

•  In rare cases, the device is unable to boot due to failed low-level recovery.
•  The internal drive is in some cases completely lost.
•  Entering power-saving mode could sometime fail.
•  Delay in the RS485 data flow could result in communication errors.
•  The backlight was not always restored on the RTCU LX4 pro at keypress.
•  hsioEncoderReset with wait=1 in mode 0 did not work.
•  Encryption in the RCH Fallback profile did not work.

Enhancements:

•  Improved CAN bus timing for enhanced performance and compatibility.
•  Enhanced power saving mode support with reduced power consumption.
•  pmDeepSleep now enters a true power saving mode.
•  The Navigation/FMI API is now fully supported.
•  Better RF ISM performance.

 Bug Fixes:

•  The 1-wire interface did not work after resuming from a power saving mode.
•  M-Bus API could hang during configuration.
•  The GNSS interface was not handled correctly when entering/exiting from power saving modes.

Enhancements:

•  New and powerful M-Bus API for the  RTCU LX4 pro and the RTCU NX-400.
•  Improvement in the CAN ISO-TP implementation.
   Supports extended CAN id's and up to 64 sessions on each CAN channel.
•  Update of GlobalSign Root CA Certificates (R1, R3, R6).

 Bug Fixes:

•  Opening/closing a data session (GPRS) could stop working after a long time.
•  Entering suspend did not succeed after a certain period of time.
•  Local variables in a callback function were not initialized to zero.

Bug Fixes:

•  On some devices, boardTemperature() showed too high a temperature.
•  DHCP did not always work over LAN/WLAN.

Bug Fixes:

•  Using GPS/GNSS creates an NMEA logfile placed at the internal drive as "system\log\nmea.log".
   This file was intended for internal development purposes.
   

Bug Fixes:

•  In some cases, the CAN bus did not work reliably.

NOTE: This is a delta firmware that requires that System-firmware V1.01.00 is already installed.


System-firmware V1.02.00 includes Runtime-firmware V1.90.00.

 
Enhancements and new functionality:

•  Improved system performance and latency.
•  Full audio support, including voice calls and DTMF.
•  Hot-plug of the SD-CARD is now supported.
•  Enhanced handling of routing when using multiple network interfaces.

Bug Fixes:

•  Possible crash when using WLAN.
•  The JWT API did not work.
•  Wake-up from a CAN event did not work.

NOTE: This is a delta firmware that requires that System-firmware V1.00.01 is already installed.

System-firmware V1.01.00 includes Runtime-firmware V1.90.00.