How to update:
    1. Exit/stop the current wallet from the wallet. (File - Exit or ./vsync-cli stop).
    2. Backup existing wallet.dat file to a safe location before upgrading.
    3. Download and install the new wallet appropriate for your OS.
        https://github.com/VsyncCrypto/VSX/releases/tag/v3.5.0.0
    4. Re-start the wallet. (Launch from your Vsync shortcut icon or ./vsyncd for linux).
    5. Let your wallet fully sync.

By default, your VSX data directory is located in the following locations for each OS type:

Windows
Go to Start > Run > %APPDATA%\vsync (or just enter the above path in explorer) or C:\Users%username%\AppData\Roaming\vsync

OSX
~/Library/Application\ Support/vsync (/Users/YourUserName/Library/Application\ Support/vsync)

Linux
~/.vsync (Hidden folder “.vsync” - control+h to display in the GUI, ls -a to display in terminal)

Update logs:
Added Zerocoin feature (Wednesday 21 April 2018 04:00:00 UTC)
Block version to v4 (Block height 300000)
Bugfix seesaw payments (Block height 320000)
Bugfix (PIVX legacy) blockchain stall at 325000
Bugfix PoS rewards
Update checkpoints
Set new alert key
Set new spork key
Added spork IsSuperMajority
Improve masternode stability
Improve network stability
Improve blockchain download speed
Improve user interface usability
New GUI for zerocoin feature
Upgrade depends build system (to use newer dependencies)
Update logo, images and color
Copyright notice correction
Update client version
Update protocol version
Automated Database Corruption Repair
More Accurate Error Messages
Reduction of Debug Log Spam
Removal of Heavy Running Transaction Search Code
Accumulator Code Refactor
libzerocoin Exploit Fix
zVSX Maintenance Mode Spork
Money Supply Indexing
More Extensive Tracking of zVSX Supply Through RPC
Multisig GUI
Better Filtering of Transactions in Stake Miner
More Responsive Shutdown Requests
More Extensive Display of zVSX Confirmation/Maturity Status
RPC changes
Bip38 Compatibility With 3rd Party Tools
Advanced Use & Privacy Considerations
Tor Service Integration Improvements
All Masternodes List GUI Removal

Website
http://vsync.pw/

Twitter
https://twitter.com/VsyncCrypto/

Roadmap Video
https://www.youtube.com/watch?v=owQ1qMsHhbQ

Telegram News channel:
http://t.me/VsyncNews

Official Telegram Community channels:
http://t.me/VSXcoin
http://t.me/VSXBrazil
http://t.me/VSXRussia
http://t.me/VSXJapan
http://t.me/VSXChina
http://t.me/VSXArabe
http://t.me/VSXSpanish

Official Discord Channel:
https://discord.gg/Arqhyqg

Bitcointalk Thread
https://bitcointalk.org/index.php?topic=2133048.0