From RADIODDITY:
Built on the success of the Open GD-77 project, the DM-1701 now supports flashing third-party firmware developed by our customers.
Search “DM-1701” at radioddity.com to download the latest firmware and learn the guidance. Check out our profile to learn more.
Important: The DM-1701 doesn’t come pre-loaded with the open DM-1701 firmware. You may need to perform the upgrade yourself.
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And visit Radioddity website by clicking on the image:
Hello, can you help me with the open firmware GD-77 for the MD-1701. 73, ON7ASZ Danny
73s , tu peux aller sur google et regarder la page opengd77 et la , tu auras toutes les informations