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After downloading the

To calculate the checksum, perform the following steps:

1. Locate and download a free checksum calculator.

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   0 Figure 1 Checksum Calculator 3 #checksum
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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
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3. Unbundle/extract the downloaded files.

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   0 Figure 1 Unbundle
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4. Locate the extracted files. Launch the hash_calc_x application.

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   0 Figure 1 Launch Application
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5. Browse and select the sbc<version>.iso archive file (this is the large file you downloaded from the Ribbon Support Portal).
   

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   0 Figure 1 Selecting ISO
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6. Click

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1. sha256. Click Calculate. After several seconds, a Checksum value will appear.
   

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   0 Figure 1 Calculate md5
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2. Locate the file you downloaded with the

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1. SHA256 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
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2. Paste into the Original Checksum field, and then click Compare.
   
   
3. 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 Downloading Software from the Ribbon Support Portal. 
   2. Repeat the steps to verify the checksum

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   0 Figure 1 Checksum Identical
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