Thank you Fraser,
I think you mean yours is a Mk1 i3?
Mine looks like a Mk2 from outside, but it still only have 120*120 instead of 140*140, I don't know why.
So if any of us can get a 140 bin file from a Mk2 camera somewhere, we may be able to get 140*140 on both of our cameras.
Good luck to us and hope that day will come earlier
Sam