when I was at 10m the orange warning LED was ON; it stayed ON untill I got back under 12m.
At 12m, the displayed deco was 99'/12m, decosum 199'...
no decoplan displayable...
after 45' diving I get back to surface with a displayed GF of 255%

in surface mode, more than 70 hours decotime, and around 45 no-fly hours ...
Any idea about what happened ?
firmware version is (I believe) 1.44, Bühl-GF, no active deco gas...