The GPS chipset used in the Bad Elf GPS (BE-GPS-2300) is affected by a GPS rollover bug that started on October 30th, 2022. Every Bad Elf GPS Pro+ running firmware older than 3.0.0 is affected. This issue is limited solely to the Bad Elf GPS Pro+, and does not affect any other Bad Elf GNSS receivers.
This bug in the GNSS engine caused 3 problems:
- Incorrect GPS date (reverting back to March 2003)
- Loss of GLONASS functionality (due to low-level algorithm dependency on #1 above)
- Corrupt NMEA RMC sentence (including speed/track/elevation fields), affecting some iOS and Android apps
As of 09-DEC-2022, these issues have been fully resolved via a 2-part firmware update. Follow the instructions at the link below to install the updates on your Pro+ using your PC or Mac:
The date associated with the positional data provided by the Bad Elf GPS Pro+ will reflect a moment in the distant past 19.6 years prior to reality. This behavior is most notable with the data logging feature of the Elf, but is also present in real-time data.
If your Pro+ has logs showing year 2003, DO NOT DELETE THEM FROM YOUR PRO+. The firmware update above will fix them, but can only do so if the logs are still present on your Pro+
Data logs stored on the Elf
Data logs after transferred to the Bad Elf App
GPRMC NMEA message