If you're not in the right chain or in the last wallet or you are sync from scratch:
COMPLETE WALLET UPDATE GUIDE BY TEKNA:
I'm in the right chain and this is what I did:I downloaded the new wallet (v.0.8.7.2-Patch2 alpha), I cancelled the .exe application of the older one in the principal folder, I cancelled everything in the roaming folder except wallet.dat (everything, also the conf file, not the wallet.dat), and I put the bootstrap (snapshot)files in the roaming folder. Then I added the new list of nodes from espers.io.
How to find the "ROAMING FOLDER": find the function "search" on your computer amd fill the field with %appdata% . The automatic search will show you the following path: C:\Users\name of your computer account\Appdata\Roaming. Click on it and look for "ESP" folder.
Nodelist: https://espers.io/download/nodes/node-list.txt
Snapshot: https://mega.nz/#!EjhiHRxA!wClv0XZK8t2W6AnO6gSq2RfDD6WMiy6FGM9-wdC6neA
Windows wallet 0.8.7.2: https://mega.nz/#!phtGlQAY!5AYa6XgbosqZnmmyLVk1uh69x7hAx_7cTJFOzDyzqE4
IF you have any kind of problems after the fix (your money don't appear in the wallet, wrong amount of money ecc), you have to RESCAN the chain: create a desktop shortcut of the wallet + click on it with the right button + click on "properties"+ detect the field "target" + scroll the title until tge end and add at the end -rescan (after a space) + reopen the wallet.
IF YOU SYNC FROM SCRATCH: you have only to add the snapshot and makw the substitution of all the file inside thw snapshot folder in the roaming folder (except wallet.dat).
After this everything will work greatly.
N.B after the update PAY ATTENTION to tranfer money to/from exchanges, they didn't confirm that they have updated the wallet and it's possible they are in the wrong chain.
EDIT: coinexchange.io has just confirmed the updating of the wallet. Let's wait for the others.
Stakes will work from block 728900
Why do you need the snapshot?
Could you simply open the wallet and wait for it to sync, if you never used it before?
Sure if you have two weeks to wait for the blockchain to sync. If you use the snapshot it will finish syncing within a few minutes.