forums.ps2dev.org

[ryoko_no_usagi]

Hello everyone,

Within the nand-flash there exists at least three distinct areas:

* the ipl
* the two fat filesystems flash0 and flash1
* the idstorage area

The id-storage area begins at 0xc0000 and appears to be used to store low-level information. The id-storage area is an associative array and information is stored using key/value pairs. The id-storage seems a little coupled to the the physical storage as each key maps to an area of 512-bytes, which is equal to the pagesize of the PSP standard nand-flash, and it seems 512-byte page operations are intended.

The keys are stored in an index which consists of two nand pages of 512 bytes. The index is identified by byte 6 of the spare area being 0x73. Byte 7 might be the id-storage version number. Byte 8 must be 1 (or possibly 0) and might indicate whether the storage is formatted or not, and a value greater than 1 in byte 9 indicates that the id-storage is read-only.

In my PSP with firmware 1.5, the id-storage index is identified by:

[Mathieulh]

That's a great piece of intel, it might become helpful in the near future ;)

[dot_blank]

any info on stubs?
_________________
10011011 00101010 11010111 10001001 10111010

[0okm0000]

[0okm0000]

[0okm0000]

[dot_blank]

please clarify what new new ver psp
and old old or new old psp :P

firmware versions would greatly help
thanx
_________________
10011011 00101010 11010111 10001001 10111010

[0okm0000]

[dot_blank]

yes all nands have idstorage ..
but idstorage change with firmware version
what do you mean by old old ver psp?

to me 1.0 is still new :P

[0okm0000]

[dot_blank]

alright i understand you now ....
i have only looked at my 1.5 idstorage
so thought that idstorage changed with
updates ...but i am glad you noticed that
there were different versions of hardware
of psps mainboard manufacturing ..i noticed
this too and would like to come up with a
standard that others can go by to verify their
psp version number (not firmware :P)

it be great if idstorage could be verified to
stay the same in any given hardware by upgrading
to 2.0 from 1.5 and then comparing the 2.0
idstorage to intial 1.5 idstorage and then posting
anyhow in this thread that info for others to see
that there is indeed no difference
just to be certain there is no errors :)

much like how ps2 has versions up to v.16 and
beyond ....you should take a picture or note
down any differences in your psps mainboards
and look for any strings of changing manufacturer
codes or a serial number or something and then
maybe others can then compare :) ...that info
is always good to know thanx again
_________________
10011011 00101010 11010111 10001001 10111010

[digihoe]

I think the first JP white (FW.2.00) was a new edition, they had altered the actionpad on that one... Nothing big...

[0okm0000]

[dot_blank]

the manufuacturer is noted right under battery
of psp on the back ....i noted the differences between
a 1.5 and a 2.0...the 1.5 came with 1.5 and 2.0
came as 2.0 so no downgrade or upgrade was used

1.5: PSP-1001
----------------
Manufactured: SKZ KISARAZU JAPAN
Date Code: 5C
MADE IN JAPAN
# 2-592-696-01

2.0: PSP-1001
----------------
Manufactured: FOXCONN LH SHEN ZHEN CHINA
Date Code: 5D
MADE IN CHINA
# 2-651-058-01
_________________
10011011 00101010 11010111 10001001 10111010

[0okm0000]

old old old ver psp

old old old ver psp Serial No. [4FR4396047]


new ver psp

_________________
PSP hardware hack
http://0okm.blogspot.com/

[dot_blank]

now thats what i wanted to see :D
_________________
10011011 00101010 11010111 10001001 10111010