OS6 on Ultra 6: Communication Error

Question

I did something bad on my update route to 6.10.2. So far I have tried Factory Reset, USB recovery tool, OS reinstall - no luck with OS6 "Communication Error", on OS4 just the first screen. After reading through the forum I would guess I somehow did something to the EEPROM. I have access to a second one, and could create an array on that. I was able to use it to boot up, but I cant see model in interface. So I guess a factory restore on that array would create the same issue again.

*I tried an factory restore on that array I created and it ended up with an hung OS4.

Sandshark · Answer

The NAS OS uses a file named vpd that's in flash memory to determine the model and serial number, and it sounds like yours is corrupt.&nbsp; It's an encrypted file that only Netgear can re-create and is one of few things a USB recovery can't fix.&nbsp; If you were to copy that from one NAS to another, assuming they really are the same model, then that might fix it.&nbsp; Of course, the problem could be deeper in that the flash memory is damaged.&nbsp; If it does work, one limitation is you'll see both units displaying the same serial number.&nbsp; Not really a big problem unless you want to use both with ReadyCloud, as that requires a unique (and proper) serial number.