1. Login to your myheritage.com account.

2. Hover over the DNA tab and go to 'Manage NA Kits':

 My Heritage DNA raw data download step 1
 

3. On the Right side of the MyHeritage kit that you want to download, click on the three dot and select 'Download':

 My Heritgage DNA raw data download step 3
 

4. A window will pop up with information on what you are about to download. Click 'Continue':

 My Heritage DNA raw data download step 4
 

5. A new window will pop up that will ask you to accept the MyHeritage Terms of Service and the Privacy Policy, the click 'Continue':

 My Heritage DNA raw data download step 5
 

6. An email with instructions will be sent to your registered email address.

7. Click on the download link:

 my Heritage DNA raw data download step 7
 

8. You will be redirected to the MyHeritage site.  You will need to enter your password and click the 'Download' button:

 My Heritage DNA raw data download step 8

9. The file will be downloaded wherever your internet downloads are usually stored.