How to sync Blockchain the fast way for "Burst Client for Windows":
Close (Exit) Burst Client completely -> Check Icon in tray!
Download Zip file from http://db.burst-team.us
Unzip file
Go to C:\Users\User\Appdata\Roaming\BurstWallet\burst_db\ <- Appdata folder is hidden!
Copy unzipped file in burst_db folder and replace the old file.
Start Wallet