Install BT747 GPS Data Logger Software or get a zip file (including source code).
The Transystem GLOG 760 Logger is affected by the GPS Week Rollover Bug for recordings in memory. The values read in real time from the virtual serial port over USB are correct.
As a result BT747 was reporting no recordings in the log file as the reported date was in 1999 for recent recordings.
This was changed in BT747 V2.2.1 . This version accepts dates starting from 1980 and - more importantly - it adds 1024 weeks to any date before 1/1/2009.
A new version of BT747 was released integrating a new AGPS download location.
The application has also been signed with a new signature, https://soft.bt747.org has been updated with these signatures and the jnlp files have been updated to use https.
The code signing key used for BT747 had to be upgraded to SHA-256.
Unfortunately that also revoked the old key and apparently the timestamping was not properly done with the previous signatures. So the java laucher complains that the certificate is revoked.
All files have been resigned and republished.
You may need to launch:
javaws -viewer
[on windows : "Windows Key + R" to access the execute popup where you can enter this].
I currently use a Holux M241, and the features I like most are
However, the memory for 131000 track points (less with newer firmware) is a bit tiny for any holiday of more than a week.
I found the "Locosys GPS Walker" with about 2 GBytes of Memory (and a built-in mp3-player, who needs that?), but that thing has some disadvantages: