Many Holux products – especially older devices – suffer from the so-called GPS Week rollover error. With this error the determination of the date from April 6, 2019 does not work correctly anymore. The date is always calculated incorrectly in the GPS device – special attention should be paid to this during processing. There may be a readout error that prevents the download of log files from Holux GPS data loggers and/or provokes an error message regarding incorrect or missing log data.
Unfortunately Holux did not fix the problem for all Holux products. For many devices the manufacturer Holux – although technically probably possible – did not provide a firmware update. Also the software ezTour was unfortunately not adapted.
The following list is not guaranteed to be complete.