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1. Locate and download a free checksum calculator.

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   0 Figure 1 Checksum Calculator 3 #checksum

   
   
   

2. Scroll down to the bottom of the screen shown in Figure 1 and select the appropriate version for your local computer. Click the file to download.

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   0 Figure 1 File Download

   
   
   

3. Unbundle/extract the downloaded files.

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   0 Figure 1 Unbundle

   
   
   

4. Locate the extracted files. Launch the hash_calc_x application.

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   0 Figure 1 Launch Application

   
   
   

5. Browse and select the sbc<version>.iso archive file (this is the large file from Downloading the Software from Salesforcethe Ribbon Support Portal).
   

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   0 Figure 1 Selecting ISO

6. Click md5. Click Calculate. After several seconds, a Checksum value will appear.
   

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   0 Figure 1 Calculate md5

   
   
   

7. Locate the file you downloaded from Salesforce with the MD5 File type. Open this file with a text editor, and copy only the hex characters from the beginning of the line.

    

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   0 Figure 1 Opening in Text Editor

   
   
   

8. Paste into the Original Checksum field, and then click Compare.
   
   
9. The following message must appear: "Checksums are identical!" If this step reports an error, STOP HERE and do the following:

   1. Repeat the steps to download the files from from Downloading the Software from Salesforcethe Ribbon Support Portal. 
   2. Repeat the steps to verify the checksum

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   0 Figure 1 Checksum Identical

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