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Forum Discussion
Re: This serial number is already registered to another customer.
i have the same problem. this is the third used Netgear router i've gotten and i can access the first two so i must have found a way at some point, but i can't get past "serial number already regist...
You can't re-register a pre-owned Netgear device if it's registered to a different account.
NETGEAR Product Registration FAQ
The registration can always be ignored or bypassed. Years ago, there was an exception on a few Netgear Smart Managed Switch models on the early firmware versions - the work-around was to start these while not connecting to any network, and install the current / latest firmware back then.
Support for ReadyCLOUD feature ends spring 2023
This part might not apply to your R6230, ReadyCloud was never available on your router model. However, as your device is a second hand unit, you never have to proof your R6230 is still under warranty and/or owned by you.