How do i replace the ancient version with the new one, without delete/recreate my droplet? And keeping the same wallet
I replace it. Here, lete me help you out some on linux. I move the old files out and then create a new section.
primecoind stop
cd ~
mv primecoin old4
git clone
https://github.com/mikaelh2/primecoincd ~/primecoin/src
make -f makefile.unix USE_UPNP=-
mkdir ~/.primecoin
echo "rpcuser=miner2
rpcpassword=test2
gen=1" > ~/.primecoin/primecoin.conf
sudo mv primecoind /usr/local/bin/.
primecoind --daemon
Thx a lot

I did it without this part :
mkdir ~/.primecoin
echo "rpcuser=miner2
rpcpassword=test2
gen=1" > ~/.primecoin/primecoin.conf
sudo mv primecoind /usr/local/bin/.
The file was created the first time, dont need to redo it i think.