Its not a problem that can be attributed to the new firmware - fairly sure of that - although I won't rule it out. I have just run over 100 laps with a car ID3 and did not experience the same problem with v1.09 of the firmware. Does the change happen from other ID's (say 1 & 2) to 6?
No fault on firmware 1.07, did some more testing last night and will do some more today. Did 5 new races with no error with firmware 1.09 and then same fault. With other car no fault so it might be a dodgy chip.
No problem here with ID3/1.09 or indeed any ID - I tried it with all flavours of chip and ICP/standard firmware.
Maybe, try vacuuming your track especially the sensor parts and putting new & tidy braids on the car.
Also, I don't think it would change the ID but I've been having XLC flippers changing on their own which I think this was due to the low angle winter sunlight hitting the sensors directly.
And just for good measure, do a 3 button hard reset - from memory, it's with the left & down arrows and start buttons together.
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