Ok I should have started by checking this.
Looking at my RFBee V1.2 uC, I seen I have an AtMega 328 (not an AtMega 168).
It explains why I had problems trying to upload firmware.
It’s weird that this version is not visible on Seeed market place.
It seem’s I have an official Seeed studio RFBee V1.2 from 25/12/2013.
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