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Forum Discussion
tschutte
Jan 06, 2026Apprentice
ReadyNAS Ultra 6 OS 4.2.31 corrupted VPD
I upgraded 3 of my ReadyNAS Ultra 6 to OS 6, and although had issues, it is running smooth (touch wood). However, I left 1 of my Ultra 6 as stock on os 4.2.31. The VPD has now been corrupted afte...
tschutte
Jan 08, 2026Apprentice
Yes tried. Maybe doing something wrong, but my OS4 is not recognizing the OS6 VPD when I replace it
- StephenBJan 08, 2026Guru - Experienced User
tschutte wrote:
Yes tried. Maybe doing something wrong, but my OS4 is not recognizing the OS6 VPD when I replace it
AFAIK the VPD only contains hardware information, so nothing in it about the OS.
Have you checked that the file in the flash matches what you copied? (This could be a flash failure).
- SandsharkJan 08, 2026Sensei
Native OS6 units use another method to ID the hardware, but loading OS6 to a legacy OS4.2.x unit does not change the vpd. At least, it's not supposed to. When it does, that's the problem.
- SandsharkJan 08, 2026Sensei
Are all units an "Ultra6"? You cannot use an Ultra6Plus vpd in an Ultra6 (though you can interchange an Ultra6Plus and Pro6, since they have the same hardware). The vpd defines the unit type and serial number -- they are one way Netgear made it difficult to use ReadyNAS OS on generic hardware.
Other possibilities are that the flash is actually bad or you are making a mistake in the copy process. Lastly is that you have misdiagnosed the problem.
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