Reader Firmware
Click on the links to download firmware files for the ORSR and ORMR readers
Version 2.7 July 2025
If you get the message “Off page” when installing the ORSR full version, use either the Network or Mobile version. Contact support to find out how to load the Full version.
These are the changes in 2.7:
- Ignores short periods of GNSS signal loss (10 seconds)
- Added support for clock board
- BCR command to read settings from BC command
- GNS command logs every 1 to 9 minute intervals (was 1)
- BTN command to change Bluetooth name fixed
- Longer FM format string allowed, fixed buffer overflow bug
- The format of elapsed time changed to make importing data easier in R
- 2d11h45m22s elapsed time is now displayed as 2 11:45:22
- Measurements to detect a broken antenna are smoothed to prevent false triggers
- Measurements to detect a overvoltage are smoothed to prevent false triggers
- Improved the recovery after autotuning an antenna that won’t tune
- Added EA field to ER report
Version 2.71. October 2025
- Fixed bug that affected database record display
- Solved problem reading old model GNSS radios
Version 2.72 October 2025
- Fixed bug that affected Android app plotting Q values
Version 2.74 Noveber 2025
- Fixed FRA bug
- Lengthened size of UP report records
- Stopped repeated prompts after autotuning on ORSR
- Fixed typing any char to stop log uploads on ORMR
Documents for Single and Multiple Antenna Readers (2007-2021)

Datalogger Firmware
The .UPD file is an image of the firmware that runs on the 2007-2021 datalogger. It can be downloaded in ASCII (.UPD) or as a compressed archive file (.ZIP). The Firmware Updater program for Windows (below) is used to write this file to the program memory on the circuit board.
Firmware Updater
The updater program for Windows writes the UPD firmware file to the datalogger circuit board over the serial port. The file is available as in installer (.zip) or just the executable (.exe). If you use the .exe and get a message about missing files, use the installer.