Tried it out my end. Turned on sentry mode and it was on for about 30 mins and then I turned it off as the car is garaged at home. Usually they remove the USB before they do any work in the Service Center (SC). I usually take my USB off and then hand over the car. May not be a bad idea to format your USB onceaonce again andsand if this is resolved. - John
I meant USB memory stick .