Can downgrade firmware from 3.18.15 to 3.18.14

Hi
My NMH405 default at fw 3.18.14 and everything were going smoothly until I upgrade to 3.18.15 which caused unable to login with remote access. I always prompt remote site is down or device offline.
Anyone know how to downgrade firmware?
Solved!
Go to Solution.

But wouldn't the available on-line upgrade be 3.18.15 rather than 3.18.14?
Is there an archive where I can choose other upgrade versions?
Is there a way to download a firmware upgrade ?
Is the firmware included in the CD iso download?
My appologies if I am missing something but the one time I upgraded, I saw only one on-line choice: 2.18.15
Alan

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Can downgrade firmware from 3.18.15 to 3.18.14

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