History file for MT1

V 20.57  29.05.2020
  * Bugfixes when wake up display
  * Improve UMTS handling
  * Reimplemented Auto-Trimming
  * Refactored GPS Signal, deviation calculation, GPS synchronization
  * Improve server synchronization
  * Synchronization-Delta for running time at GPS and SYNA/SYNM synchronization
  * Show battery state in welcome screen

V 20.56  13.05.2020
  * Corrected a problem at UMTS icon

V 20.55  13.05.2020
  * make DNS lookup in error case faster
  * improved resend logic for triggers
  * no more "snowy"-display at startup

V 20.54  13.05.2020
  * Switch-off reason, switch-off date and switch-off time are stored in flash
  * workaround for keyboard controller
  * error message on settings error
  * session handling improved
  * "S" at UMTS icon wasn't always correctly displayed
  * UMTS handling improved
  * send system state acknowledged

V 20.53  11.05.2020
  * Bugfix in UMTS driver (sometimes the session to the server couldn't be established)
  * more logging for the keyboard

V 20.52  08.05.2020
  * Improve UMTS handling

V 20.51  08.05.2020
  * Send the system state each 30 minutes to the server
  * Changed UMTS handling
  * USB interface bugfixes

V 20.49  06.05.2020
  * Commands to make channel settings are checked whether the settings affect a time measurement channel

V 20.48  29.04.2020
  * Mobile network handling for deployment improved

V 20.47  28.04.2020
  * Fix in UMTS driver
  
V 20.46  28.04.2020
    Keyboard Interrupt Test implemented

V 20.45  24.04.2020
  * Bugfix of dynamic memory usage
  * Display GPS error icon, if the communication with the GPS module doesn't work
  * Bugfix: Increase the intervall between UMTS connecteion retries
  * Improve the UMTS connection
  * Save trigger when device is switched off and load the trigger when device is turned on
  * Increase the trigger memory to 7000 triggers
  * Scroll modus displays saved trigger even if the device isn't synchronized

V 20.43  17.04.2020
  * Deactivate watchdog und set compiler optimization to O1 (for debugging)
  * Remove Not connected icon
  * Improve the UMTS module turn off logic
  * Hanlding of Online/Server in UMTS Icon corrected
  * Increasing the timespan between UMTS connection retries up to 15 minutes
  * UMTS connection improved
  * Reimplement trigger resending
  * Don't reconnect if a trigger can't be send and the MT1 is connected to the internet
  * Bugfix at deactivation of PDP context and Soft-Reset
  * Increase stack for Keyboard-Logging

V 20.42  08.04.2020
  * Bugfix when searching a new operator in auto operator mode
  * Display internet and server connection in the UMTS icon
  * Prefer soft reset befor hard reset for UMTS module
  * Logging feature for keyboard
  * Bugfix when save device name
  * Bugfix: UMTS connection wasn't established after a firmware update
  * Bugfix: The correct server wasn't loaded at startup
  * Save settings before a firmware update

V 20.41  03.04.2020
  * UMTS-Communication-Key replaced
  * Improved the UMTS connection
  * Fixed the operator search
  * Bugfix of displaying the UMTS icon
  * UMTS module driver bugfixes
  * Reactivated the UMTS test
  * Remove SARA R4 driver
  * ICCID can be requested as soon as the UMTS module is powered on for the first time
  * Bugfix when store DEVNR

V 20.32  2020-03-02
    First customer version