HOW TO UPDATE WALLET

Just replace your current akencash-qt.exe (or Akencash Core.app on MacOS) with recent version (v0.4.4.1):
https://aken.cash/#wallets

It's also a good idea to backup your wallet (File->Backup Wallet) before doing an upgrade.

HOW TO UPDATE MASTERNODE TO V0.4.4.1
https://aken.cash/help.php#update