64 or 32 bit out of interest?
Looking further into my issues , my cold v44 wallet is 103 protocol and my v44 (64bit) MN is saying 102 protocol.
64 bits. With this link :
wget https://www.dashpay.io/binaries/dash-0.12.0.44-linux64.tar.gz --no-check-certificate
I still have some MN to upgrade (was waiting for .45 version but it take longer than I though).
So I'll do it again and verify if still protocol version at 103