HP ProDesk 600 G3 MT - Missing Feature Byte / MPM Mode (Need Factory String)

[TechDesk99]

Hello HP Community Experts,

I have an HP ProDesk 600 G3 Microtower PC (Product Number: Y3E02AV) that is currently stuck in "Manufacturing Programming Mode" (MPM) due to a missing/blank Feature Byte in the BIOS DMI table.

Whenever I try to re-enter the code manually from the physical label, the BIOS rejects it with a "CRC Failed" error because the chassis sticker is physically damaged and partially illegible.

As per community guidelines, I did not post the serial number publicly here, but I have the official Serial Number ready to provide to an HP Agent or HP Expert via Private Message (PM) to retrieve the original factory Feature Byte string.

Could someone please reach out to assist with this?

Thank you.

[VikramTheGreat]

Hi @TechDesk99,

Welcome to the HP Support Community.

Thank you for providing the details regarding your HP ProDesk 600 G3 Microtower PC (Y3E02AV).

I understand that the computer is currently in Manufacturing Programming Mode (MPM), the Feature Byte information is missing or incomplete, and manually entering the information available from the damaged chassis label results in a CRC Failed message.

Thank you as well for not posting your serial number publicly.

The Feature Byte is part of the system identification information stored in the BIOS. Since your original Feature Byte cannot be reliably read from the product label and the system is rejecting the value being entered, this is not something we recommend attempting to correct through additional BIOS/DMI programming steps in the HP Support Community.

For this issue, please contact the HP Commercial Phone Support team in your country/region. They can review the product information and determine the appropriate support options available for the system.

[SDH]

If you go into HP PartSurfer and enter your serial number (or is it the exact product number?) you may be able to view and copy/paste the Feature Byte you need. Entering this exactly correctly is needed, and the labels have alphanumerics that are not always easy to understand. The spacing needs to be perfect too. This has to do with licensing a new "virgin" motherboard and what you are trying to do is called "to brand" or "to tattoo" the motherboard. The process will likely also want some other entries from the bottom labels, so have pics of all those easily available before you start.

To clarify, you don't need to enter your motherboard's UUID or MAC. This process is usually done by a HP Field Service Representative, but I have done it myself after I unexpectedly got two brand new Z620 version 2 motherboards off eBay which were both in their original HP boxes, and  in their original sealed antistatic bags.