This repository is for old survey grade GPS receivers firmwares.

All official firmwares were downladed from internet.

All modified firmwares were modified by me.


So far i have access to:
Ashtech Z-xtreme
Ashtech Z-Max
Trimble 4000 sse
Trimble 7400
Trimble 4700

If you have some gps receiver that you want to donate to have week fixed, contact me.

If you like what you find here, please consider donating (sponsor button on top) :-)