Well, it did not blow up or implode or anything like that. However, it behaved rather disconcerting.
At first, it flashed ERR, so my son gave me a sign “something is not right with computer”. It then showed warning MOD is exceeded. Then it showed warning that he went into deco. Then it showed warning low on air. Then a warning that he missed a deco stop. All within 30 seconds.
At that point I told him to forget about Teric and he finished the dive on an Aladdin and SPG. Even more weirdly, his dive log recorded a dive down to 1000ft…
I was impressed how well my son handled it (And record breaking dive).
Of course , it helped that he was familiar with the backup computer as that was what he was diving prior to Teric over 3 years ago. My shop sent it to shearwater. Will see what they say and if I will be responsible for repairs.