Battery changing and OS lost

[Romain]

Hi everyone,

I change my battery tonight (3rd time) on my OSTC sport (2 years old 40 dives). During the reboot the H&W logo appear and the proces is stuck with a red light on the side of the screen.
By pressing the right button the Bluetooth icon turn on. I tried to connect companion multiple times with no success. I tried to use OSTC3 helper (tinybldWin) to with no more success.

Anyone have a idea to fix it ?
Thx for help !
Romain

[Ralph]

Hi Romain,

did you got a connection established with tinybldWin? If yes, which firmware file did you try to load? Asking becuse the normal ones do not work in this "rescue mode", it needs a differently coded one.

BR
Ralph

[heinrichsweikamp]

Hi,

When the Bluetooth Icon appears, the OSTC is in a special bootloader mode. You can quit this mode with the left button and the unit should start normally. If not, there is a special HEX file you can use. Please email me for details then: info@heinrichsweikamp.com

regards,
Matthias

[Romain]

Hi first of all thx for yours advices.

1) i can connect OSTC s with tinybldWin
2) the .hex file loaded in the OSTC is called : o3_tiny.hex (i got it by the reseller innodive).
3) after a "succesfull" loading the OSTC crashe again (black screen).
4) i tried to disconnect the battery for reboot
5) at the restart the logo H&W is appear but nothing more and i failed to load a new firmware (as you can see below).

21:01:31.566 Unable to enter hwOS service mode
21:01:31.568 Port COM4: Unable to enter hwOS service mode
21:01:31.570 Erreur: Port COM4: Unable to enter hwOS service mode

I gonna to mail Matthias for detail and get the HEX file.
See you at the next step (i hope this adventure can help somebody).

[heinrichsweikamp]

Hi,

Do not install this recovery HEX file with the companion. I have emailed you detailed instructions.

Regards,
Matthias