Trouble upgrading ATS NMC firmware

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Hi,

I am having trouble updating the firmware version on an ATS. I downloaded the latest (March 2023) released version from (defanged URL) hxxps[://]www[.]apc[.]com/us/en/download/document/APC_NMC3_ATS_0068_EN/ and then updated it using the utility in the executable file. The 'NMC Firmware Update Utility' shows a successful update, and we lose connectivity for three pings as the device reboots.

Yet, when accessing the device, 'about' outputs show that the NMC is still on the Oct. version. This is preventing us from onboarding the device into EcoStruxure IT (error shown by the gateway output).

AP4450A
0N-4421A

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