OSTC 2 sport won’t wake up

[Franledent]

Hello, since this morning my OSTC don’t wake up. I charge it yesterday before diving ans this morning it won’t wake up.
How can I résolve thé problem ?
Thanks

[Ralph]

Hi,

this question has now been posted a couple of times on this forum, so you may already find an answer here. If not, please state your OSTC model, Firmware, battery type used, etc.