[Leroy Hastings]

Hello,
(I have been a member for a while but I had to make a new account to get back in).
I have a decent tune on an DA-1 ECM with a J3 chip, and another DA-1 ECM with a Quarterhorse that has a dead battery. I removed the battery but have not soldered one back in (I was thinking of using wires running to a small battery holder that would mount outside).
But I do not have my laptop anymore, and just want to have a back up ECM to carry with me. If I was to send my ECMs to someone, could they transfer my tune from the J3 chip to my Quarterhorse? Or to another J3 chip?
Thank you.