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There is no firmware available from Parker Hannifin for these techboxes to upgrade/downgrade them, there is no upgrade/downgrade procedure. This was a Devicenet issue regarding vendor identification schemes.
Summarizing:
The DeviceNet standard, issued by the ODVA (Open DeviceNet Vendors Association) requires all DeviceNet products to incorporate a Vendor Identifier (a unique number allocated by them to each manufacturer of DeviceNet products).
When SSD departed from Eurotherm, there was a requirement to remove Eurotherm from all documentation including the DeviceNet Vendor Identifier. This change was effected in V4.1 Firmware for the DeviceNet product (can be identified from drive keypad).
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