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The "Checksums calculator" is an open source GUI application that has been developed to run on Windows, MacOS X and Linux operating system on 32-bit and 64-bit architectures. It calculates checksums of functions: md5, sha1, sha256, sha384 and sha512.

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Perform the following steps to compare calculate the md5 checksum of the downloaded BMC firmware package with md5sumand validate it against the value in the .md5sum file:

1. Download all the files from SalesForce customer portal the Ribbon Support Portal required for the SBC installation or upgrade. Refer to Downloading Software from the Ribbon Support Portal.
2. Untar the Firmware firmware package to get the bmc5X00_v<Build_Number>-R0.rom file. Refer to the latest SBC Core release notes for information on the latest BMC package details.

3. Download the calculator application (.zip) file that matches the version of  of your computer operating system.

    

4. Unzip the calculator application file to a folder in your local computer.

5. Launch the "Checksums calculator" application from this folder. (The Checksums "hash" calculator name is different depending on your operating system).

   Note
   The following images are for example purposes only and may not reflect the most current release version.

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   0 Figure 1 Launching Hash Calculator
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6. Using the Checksums calculator, browse and select the Sonus bmc5X00_xxxx.rom file (where xxxx is the file version).

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   0 Figure 1 Browsing BMC rom file
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7. Select the "Hash function" md5.

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   0 Figure 1 Selecting md5 Function
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8. Click Calculate. This extracts the checksum from the .rom file. A hexadecimal value appears in the Checksum text box.

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   0 Figure 1 Calculating Checksum from ROM file
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9. Using a text editor, browse and open the bmc5X00_xxxx.rom.md5sum file (where xxxx is the file version). This file contains a hexadecimal checksum value.

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   0 Figure 1 Opening BMC md5sum in Notepad

10. Copy and paste the contents of this file into the "Original checksum" box.

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    0 Figure 1 Copying and Pasting the checksum
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11. Click Compare.

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    0 Figure 1 Comparing Checksums
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The validation is successful when both checksums are same and a message box displays "Checksums are identical".

If any other message displays, repeat the process to download both the .rom and .md5sum from SalesForce customer portal the Ribbon Support Portal and repeat the above checksum process. If the validation fails a second time, contact Sonus Technical Assistance CenterSupport.