Default Upgrading to Froyo 2nd handset

Afternoon All,

I am lucky enough to have two handsets i9000 international versions locked to Bouygues Telecom, France.

When I received the first handset I quickly upgraded it to JPK without reading the forums and therefore I was unable to unlock it. Also I deleted all the contents from the efs folder thinking that it would regenerate the contents on reboot (stupid me).

Now I have received my second handset I have kept it on stock 2.1 and have successfully unlocked it using the sgs unlock apk available on the market.

Is there anyway i can use the intact efs folder on my second handset and transfer it to my first handset ?? If this is possible does this mean that both handsets would have the same imei ?? is it possible then to change the imei to the imei that it came with when i first got it ?