Вот, нашел даташит... Чип предположительно AT26DF321 Write Protection

Вот, нашел даташит...
Чип предположительно AT26DF321
Write Protection действительно присутствует...

Но причина, кажется в Advanced Security Features of Intel® vPro™ Technology, а именно:

At the beginning of the flash (that is, at address 0)
there is an area called the flash descriptor. This area
describes the partitioning of the flash into regions,
and defines the owner of that region (see Figure 1).
The flash controller is responsible for enforcing the
partitioning of the flash according to the contents of
the flash descriptor. This ensures that the Intel AMT
region of the flash is accessible by the Intel AMT
processor only.

The flash descriptor also contains the access
capabilities to the flash descriptor itself. If the flash
descriptor remains open to write operations, the
protection on the other regions is of course useless.
Therefore, at the end of the manufacturing process,
the OEM must lock the flash descriptor region. From
that point on, it cannot be rewritten. This precludes
any possibility of access to the flash from regular
host-based software

HPBI103 read VPRO

Assets Utility Version 1.02 Copyright (c) 2006 Hewlett-Packard Corporation
VPro Enabled
DESCRIPTOR LOCKED
Management Engine enabled
Flash Protection Override disabled 

Вопрос: есть ли способ сделать DESCRIPTOR UNLOCKED?