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CPU 1517-3 PN (6ES7517-3AQ10-0AB0) Firmware downgrade

Created by: PhucHo at: 8/6/2025 9:20 AM (2 Replies)

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8/6/2025 9:20 AM	Rate (0)
PhucHo Joined: 8/6/2025 Last visit: 8/11/2025 Posts: 2 Rating: (0)	Hello everyone, I have some problem with the base firmware v4.0 of CPU 1517-3-PN, that it causes some incompatibility with the Intouch Communication Driver . Can I able to downgrade the firmware of this CPU to the lower firmware version like v3.0 or any version of 3.

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8/6/2025 9:28 AM	Rate (0)
Stefan Arcularius Platinum Member Joined: 1/21/2013 Last visit: 8/29/2025 Posts: 4087 Rating: (633)	Hi PhucHo, The new S7-1500 CPUs (1517(F)-3 PN and 1518(F)-3 PN) were released with firmware version V4.0. Therefore, earlier versions are not available. Kind regards Stefan

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8/6/2025 9:36 AM	Rate (0)
PhucHo Joined: 8/6/2025 Last visit: 8/11/2025 Posts: 2 Rating: (0)	Hi Stefan, Thank you very much for supporting me.

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