Backup your wallet data file and save in other safe place -other folder, USB drive, etc.-. see location bellow

The default installation folders and files of Northern wallet coin is similar to almost all

If default installation you find it in 

C:\Users\YourUser\Appdata\Roaming\Northern

and is called wallet.dat

Unzip all the folders and files provided in Blockchain_Northern_ltisa_20200305_0125pmUTC-3.zip

in a temporary directory you choose

We provided the folders blocks, chainstate and sporks with all the blocks and the structure of the Snowgem Blockchain at this moment

Copy and replace all the same folders that are located at

C:\Users\YourUser\Appdata\Roaming\Northern
with what we provided and you unzipped

( for example: you can delete the folders blocks, chainstate, sporks, then unzip blocks, chainstate and sporks from the zip file under 

C:\Users\YourUser\Appdata\Roaming\Northern)

After the end of copy and replace

run your GUI Northern wallet (northern-qt.exe) and wait until full synchronization of your wallet at the present 

Be patient until blockchain is upload in memory and/or your swap file (a few min)

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If you need:

download Northern wallet at https://github.com/zabtc/Northern/releases

More info: https://bitcointalk.org/index.php?topic=2945438.0

run northern-qt.exe until it generates the folder

C:\Users\YourUser\Appdata\Roaming\Northern

Close your GUI wallet 

Backup your wallet.dat file to other safe media but keep the original generated there

If you are disappointed with the crypto coin blockchain you paid for, 
you can claim for a re-fund of your payment.

We apologize for your time lost.
Just email us and we will process a return of your funds.