2.29	03/18/2024
1.  Bug fix:  Corrected an issue that would disable Bluetooth if a temperature below 50F (10C) was measured.
2.  Bug fix:  Corrected an issue that would save the incorrect latitude if the measured latitude was -10.0 or below.

2.23	01/01/2024:
1. GNSS and Bluetooth available by default for TDR 150 meters sold in 2024 and later.

2.22    08/08/2022:
1. Improved 4.8" rod calibration for closer tolerance between meters
2. Improved 8.0" rod measurements in legacy TDR 300 mode
3. Improvements to HDOP reporting when changes in satellite reception occur
4. Reduced recovery time when GNSS Power Save mode is enabled and a reduction in satellites has occurred
5. BUG FIX: Corrected an issue when "Save to USB" is selected that could cause display to reset on TDR 250 models
6. Improvement to sensor error reporting and recovery

2.21	02/18/2022:
1. Internal release for production support

2.20    07/18/2021:
1. Bug Fix: Corrected issues where switching VWC% to Period mode was allowing open air readings to accumulate in the running average.
2. Adjusted 4.8" rod calibration range for current production to support manufacturing change

2.19    06/25/2021:
1. Improved GNSS Power Save response time and handling
2. Added visual indication of GNSS sleep mode entry
3. Lowered Bluetooth and battery level icons out of the display shadow to improve visibility
4. Added HDoP (horizontal dilution of precision) to the Reading screen
5. Added HDoP value to the data log entry for reading 
6. Added Satellite count to the Reading screen
7. Increased the size and position of the GNSS icon to appear on the right of the satellite count and HDoP reading
8. Changed Log “0% Full” to “< 1%” in the setting menu for better clarity.
9. BugFix: Corrected issue with spacer use where VWC level reported was too low
10. BugFix: Removed spacer option from Hi-Clay

2.18    03/26/2021:
1. Set QZSS satellite system option to enabled by default (existing users in AU or JP should verify the option Is enabled). Non AU or JP users can set the option to their preference.
2. Changed GNSS satellite tracking mode to improve location referencing.
3. Optimized GNSS mode startup

2.17	02/04/2021:
1. Initial public release for TDR-250 models
2. Changed the User Calibration menu option to support new and previous releases of sensor firmware.

2.16	12/16/2020:
1. Updated the read sequence to improve the speed that readings are displayed
2. Added support for fractional Timezones (India, Australia, others)
3. Improved reporting of average count when a prior reading is deleted
4. Enhanced GNSS Power Save feature to timeout when no reading has been made in four minutes
5. Improved bluetooth data packet for temperature reporting in extreme temperature conditions.
6. Added support for sensor firmware version 1.2.2.4
7. Improved shutdown sequence to clear residual screen data upon shutdown for smoother transitions
5. General improvements for internal production support

2.15	10/07/2020:
Update to correct issue with 2.14 applying Item #6445GBU “TDR 150 GPS/Bluetooth Upgrade” to TDR-150 models.

2.14	09/15/2020:
1. Increased limit of the displayed average count
2. Removed open-air / out-of-soil readings from average count
3. Enhanced visibility of average and reading count with bold font
4. Reduced delay in geo-referencing interval
5. Improved GNSS monitoring of HDOP to improve accuracy of geo-referencing
6. Added time clock icon to alert user the GNSS module has "timed out" and shutoff when it has not received a location or time update in over 6 minutes
7. Added GNSS option to enable QZSS satellite system for use in geo-location referencing: Valid for Australia, Guam, Hawaii, Japan, and immediate surrounding areas.
8. Improved GNSS time to first reference once option has remained active for 6 minutes or more
9. Added GNSS power save menu option to reduce power consumption; Note: will increase referencing time
10. Reductions to overall power consumption to conserve battery life
11. Added menu option to clear user calibration (which was part of reset to factory defaults). Now settings can be maintained when clearing user adjustments
12. Added "About" menu item to display firmware version info
13. Added ability to update the sensor block firmware from a USB flash drive
14. Added ability to manually update the date and time from the Date and Time options of the settings menu

2.13	01/23/2020:
1. Bug Fix: Corrected issue where GNSS Date and Time update would report incorrectly during double-digit months

2.12	08/21/2019:
1. Default rod type is now set to "NOT SET" (was Turf 1.5") to reduce tendency to leave on Turf setting with longer rod types used.
- Note: Users of 1.5" 3.8cm rods will have to set the rod type upon updating to 2.12
2. Bug Fix: Improved sand setting soil equations for 1.5 inch/3.8cm rods to correct 0% VWC readings in moist soil.
3. Corrections to improve accuracy in the soil algorithm for 4.8 inch/12.2cm rods in sand setting
4. Improved reporting of sensor detection in cases where plug has not been fully seated
5. GNSS Latitude/Longitude reporting changed to decimal degrees formatting standard in data log entries.
6. Added option to allow restarting the Time and Date update by pressing the menu button from either the date or time entry in the settings menu
7. Reduced time to obtain, compute, and display soil readings.
8. Improved user interaction with calibration screens.

2.11	07/25/2019:
1. Changed the low battery indicator update interval.
2. Backlight illuminated at startup during battery test.
3. Low battery level message now shown any time the battery runs low rather than just at startup. 
4. Bug Fix: Corrected issue where GNSS module will shut off during time update interval if the GNSS menu setting is set to disabled. 
5. Improved screen transition timing.
6. Bug Fix: Corrected issue where data log percentage only updated at startup
7. Bug Fix: Corrected issue with temperature reporting in below zero conditions causing issue with displayed values
8. Added sensor presence testing

2.02	06/07/2018:
1. Added GNSS support for Galileo and GLONASS satellite systems
2. Improved GNSS geo-referencing capability

2.00    05/08/2018:
1. Added support for external digital infrared temperature sensor 
2. Improvements to EC equations

1.05    06/07/2017:
Initial Release