And thanks for V1.2.6. I will keep it for future use.

Well, this is interesting. I let the V1.3.4 downgrade keep going through the cycle of writing and reading for about twenty minutes, which always resulted in the same read error. I assumed that the downgrade had failed. I waited until it was in read mode and just yanked the XGPS device out of the USB...

OK, thanks, email sent. I walked the Dual XPS over to a Win10 machine and tried downgrading to V1.3.4 again. I get the same message as on the Win7 machine. After writing the file, the verify routine reports "Read Error at X0500" and immediately starts re-writing. I'll try the V1.2.6 after ...

Yes, the small switch is and has been in the correct position. All of the links within this forum about the 5Hz versions of the firmware go to dead links on the Dual site. Searching the Dual site only reveals the latest V3.0.3 firmware. I tried to downgrade to v1.3.4 which had worked, but the downgr...

Samsung S9 running Android 8.0.0

The Dual unit is XGPS150A updated to firmware 3.0.3 through their Windows app.

So I have had this device for a while and it worked quite well at 5 Hz with my old phone. Now that I am setting up a new phone, I installed a fresh copy of Lap Timer and updated the XGPS firmware to 3.0.3. I get a connection, but it ALWAYS connects at just 1 Hz. I had thought that the 5 Hz solution ...