Download BlackCoin wallet 1.2.5.1
Use the debug window or CLI to execute following commands.
blacknetkeypair Save your mnemonic before proceeding further.
burn n pubkey to burn n coins.
The old coin have also a future so i will split!
Thats right?
The new wallet (1.2.5.2) is same as old, but without possibility to create "blacknetkeypair" and also it shows no warning message in future that IBO will end 14 dec., (maybe older versions will show this alert indefinitely, I do not know)
To continue to use blackcoin you can best use 1.2.5.2 (but any other version will work)