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Published 20 hours ago • verified publisher icon SuperThunder

Can flash Boot Block 2013 with software only (FPT.EXE) by triggering MANUFACTURING MODE

Open bibikalka1 opened this issue 9 months ago • 1 comments

I discovered that by incompletely upgrading the Management Engine (ME) using HP tools only one can trigger MANUFACTURING MODE.

The very first step is to backup the full BIOS as is: [FPT.EXE -d GOOD_00.BIN]

In MANUFACTURING MODE fpt has full write access to the entire BIOS chip, including the BootBlock area. To exit the MANUFACTURING MODE, flash back the full BIOS backup with the BootBlock replaced: [FPT.EXE -F GOOD_00_BB2013.BIN] This way you restore ME back to its prior state, and the manufacturing mode will be exited since ME looks like it looked before.

See these posts for details: https://h30434.www3.hp.com/t5/Business-PCs-Workstations-and-Point-of-Sale-Systems/Z620-Z420-Z820-Boot-Block-software-only-flash-easy-ME/td-p/9025210 https://www.techpowerup.com/forums/threads/hp-workstations-owners-club.254315/page-13#post-5251044

bibikalka1 avatar May 13 '24 13:05 bibikalka1