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[ELPHICKANDY]

Hello all. I hope someone on here can help as I'm getting desperate. I own a 2009 Tigra B 1.4 petrol. My Tigra has developed what I'm told is a quite common fault. The oil light switch failed, forcing oil up the oil wiring loom. This has now damaged the engine ecu.These are not made anymore. I'v found that second hand ones are quite easy to find. However, my mechanic tells me that a replacement must be wiped clean on the doner car, otherwise it's useless. Can anyone on here advise me as to where to find a wiped clean, on the doner car ecu?
Thanks in advance