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By a mistake I have installed v10.45 version on an OSTC3 (serial 2308). Now I am not able to connect through USB service mode. I am using windows 7 and companion 3.0. I was able to do changes before this but I was in doubt as some mentioned one should install the OSTC sport version. There was a bug in the 2.98 version was it did not warn and switched over for 6 m deco stop with 100 o2. I had to go through the gass list when lying at decomp. The Deco gas was in red colour even if it was selected as deco gass. Anyway now I need to be able to enter USB service mode with my OSTC3 so I can download the correct software. I need help here. By the way the same software 2.98 version gave also the same issue with my OSTC2 in deco at 6 meter. Here however with the recent download this seems to be have fixed when I tried in Simulation mode. bxt rgds thomas

I am able to enter download mode when selecting bluetooth on the OSTC3 but OSTC Companion v 30.00 beta 8. WHen selcting oestc3 firmware 2.98 it says this OSTC is not an OSTC3 type - which is probably due to the software Sport version.

OSTC3 selected.
Connecting...
Not an OSTC3.
Port COM6: Not an OSTC3.
Error: Port COM6: Not an OSTC3.

I would guess, that you have to take the way back. Try to select OSTC Sport and not an OSTC 3. I suppose the device is now defined as a sport.

If an OSTC has been un-locked from Sport to Tech -- either right from the start or later by upgrading -- it stays enabled to accept Tech firmwares. There is no "downgrading" by installing a Sport over a Tech.

tn.norway@gmail.com Wrote:
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> beta 8. WHen selcting oestc3 firmware 2.98 it says
> this OSTC is not an OSTC3 type - which is probably
> due to the software Sport version.

Just choose "OSTC Sport" in the companion.

regards,
Matthias

Hei
Success. But I did 2 things. I changed to a different computer as I had problems to open the port of the ostc3 even when choosing the ostc sport. I tried all ports and activated the bluetooth mode on the OSTC3.

When I switched to the older computer with an older USB 2 port it worked much better.

Then I renamed the file of osts-sport something.hex file for the 2.99 beta version as when I selected the sport version it only looked for that particular file name.

THat did the trick - the firmware was uploaded and installed successfully with the new 2.99 beta version.

Bst rgds
Thomas Nilsson

Hi,

Thanks for the feedback. One little note to your post:

tn.norway@gmail.com Wrote:
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> I tried all ports and activated the
> bluetooth mode on the OSTC3.

We read this quite often ("Tried all ports")... That's absolutely not required. In Windows, just go to your "Device Manager" and check in the COM&LTP Ports section which (virtual) COM port the OSTC is assigned to. No need to try any other port then the one which os shown for your OSTC there.

regards,
Matthias