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 Post subject: Re: Read/Write Serial Flash on WDC Logic Boards
PostPosted: October 4th, 2007, 14:43 
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Joined: October 3rd, 2005, 0:40
Posts: 2574
Location: Hungary
Byte swap: byte order swap

00 01 02 03 04 05 -> 01 00 03 02 05 04

pepe

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 Post subject: Re: Read/Write Serial Flash on WDC Logic Boards
PostPosted: October 5th, 2007, 3:45 
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Joined: September 30th, 2005, 7:33
Posts: 523
Thanks pepe!

Is there a program that can do this for me?


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 Post subject: Re: Read/Write Serial Flash on WDC Logic Boards
PostPosted: October 5th, 2007, 5:04 
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Joined: August 11th, 2005, 23:21
Posts: 90
Location: Poznan, Poland
U dont have to use adapter with seagate pcb too, adapters were needed when u had to make hot swap flash while pcb was powered on (because wdc logic board will not start without rom or with corrupted rom content)

Thats why u have to short 4&5 legs of flash when powering on seagate pcb (because program will hang up with corrupted rom) when its shorted, program will start from internal rom builtin uP)

Remember this is only temporary solution when u havent proper tools to do what you need. (but works and its cheap even free, just using _own_ brain is needed). If you take your business seriously, consider buying universal flash programmer. its really cheap now. eg. elnec or xeltek

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 Post subject: Re: Read/Write Serial Flash on WDC Logic Boards
PostPosted: February 18th, 2008, 12:39 
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Joined: January 23rd, 2008, 10:36
Posts: 31
Location: Poland,Częstochowa
Original text->
http://support.salvationdata.com/downlo ... change.pdf


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 Post subject: Re: Read/Write Serial Flash on WDC Logic Boards
PostPosted: April 7th, 2008, 13:28 
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Joined: May 30th, 2005, 17:07
Posts: 444
Hi,
WDC 2.5" SATA HDD - PSV Mode...
[ '''''''''''''''| |''''''''' ] [....] ---> GND

Mikippp


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WDC_25_SATA_.JPG [ 20.54 KiB | Viewed 5991 times ]
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 Post subject: Re: Read/Write Serial Flash on WDC Logic Boards
PostPosted: July 11th, 2008, 20:42 
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Joined: October 23rd, 2006, 8:56
Posts: 1342
According to the Salvationdata document posted here, you can not write content back to the ROM chip without un-soldering. They state because write protection is active on the M25P10 chip. Can someone verify the validity of this?
Also, what is with other chip sets any experience?

Thanks!


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 Post subject: Re: Read/Write Serial Flash on WDC Logic Boards
PostPosted: July 16th, 2008, 19:52 
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Joined: October 3rd, 2005, 0:40
Posts: 2574
Location: Hungary
Hi,

I never had problems with writing serial flash roms in WDs without desoldering...

pepe

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 Post subject: Re: Read/Write Serial Flash on WDC Logic Boards
PostPosted: March 18th, 2009, 1:49 
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Joined: March 18th, 2009, 1:47
Posts: 2
Location: Baltimore MD
That stuff is awesome, I want one of those, where can I find this ?


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 Post subject: Information for new comers on hard drive failure
PostPosted: March 27th, 2009, 19:00 
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Joined: February 27th, 2009, 3:26
Posts: 1691
Location: French Polynesia Tahiti
Here is an interesting paper I ran across for new comers on why hard drives fail. You might like to read it


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Downloaded 1561 times

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 Post subject: Re:
PostPosted: December 22nd, 2009, 3:07 
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Joined: December 21st, 2009, 19:34
Posts: 15
Location: United States of America
Amarbir wrote:
Hi Mates,
I Got These SMD Probes From a Company Called Panoma From USA .They Have a Kit Which Has All These Probes .Also You Can Make a PCB For The Other Side To Be Used Like What Sivava Willem Eprom Programmer Site Does



Just to clarify, the manufacturer is Pomona ( http://www.pomonaelectronics.com/ ) which is now owned by Fluke. This clip is in 8-pin SOIC format.


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 Post subject: Re: Read/Write Serial Flash on WDC Logic Boards
PostPosted: March 16th, 2010, 23:55 
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Joined: August 15th, 2006, 3:01
Posts: 2354
Location: CDRLabs @ Chandigarh [ India ]
Well ,
I Would Say Use a Universal EPROM PROGRAMER Lol + SOIC8 Adapter

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 Post subject: Re: Read/Write Serial Flash on WDC Logic Boards
PostPosted: May 1st, 2010, 2:03 
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Joined: May 1st, 2010, 1:56
Posts: 3
Location: Switzerland
what is "PSV mode"? please tell me.thanks!


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 Post subject: Re: Read/Write Serial Flash on WDC Logic Boards
PostPosted: May 1st, 2010, 2:46 
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Joined: August 19th, 2007, 17:30
Posts: 1885
Location: In your hard drive.
Use search.

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 Post subject: Re: Read/Write Serial Flash on WDC Logic Boards
PostPosted: May 2nd, 2010, 2:04 
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Joined: September 8th, 2009, 18:21
Posts: 9749
Location: Australia
In a uP system, you can sometimes read and write data stored in program memory by direct access using a feature called Program Space Visibility (PSV).

For example, you could use HDDHackr to write a ROM patch for a Western Digital WD1200BEVS drive to enable it to be used in an XBOX360.


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 Post subject: Re: Read/Write Serial Flash on WDC Logic Boards
PostPosted: May 2nd, 2010, 2:40 
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Joined: September 8th, 2009, 18:21
Posts: 9749
Location: Australia
fzabkar wrote:
For example, you could use HDDHackr to write a ROM patch for a Western Digital WD1200BEVS drive to enable it to be used in an XBOX360.

I think I may have misread the documentation. It appears that HDDHackr accesses the ROM modules on the platters, not the PCB ROM.


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 Post subject: Re: Read/Write Serial Flash on WDC Logic Boards
PostPosted: May 2nd, 2010, 11:58 
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Joined: July 18th, 2006, 3:05
Posts: 7526
Location: ITALY
To access the embedded PCB rom it takes A LOT MORE :mrgreen:


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 Post subject: Re: Read/Write Serial Flash on WDC Logic Boards
PostPosted: March 13th, 2013, 1:31 
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Joined: April 25th, 2008, 9:49
Posts: 20
Has anyone used a Needham's EMP 21 programmer for reading/writing serial flash ROM on WDC Logic Boards? If so what are the connections from the ZIF socket to the SMD probe(IC clip)? I'm assuming the EMP 21 can handle a 25W406A IC.

P.S. What are the connections in the photographs ZIF socket to SMD probe(IC clip). Thank You


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 Post subject: Re: Read/Write Serial Flash on WDC Logic Boards
PostPosted: March 19th, 2013, 16:21 
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Joined: March 19th, 2013, 15:52
Posts: 16
Location: earth
Very useful topic, is there any place to buy that clip-adapter for the programmer? and its model please?


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 Post subject: Re: Read/Write Serial Flash on WDC Logic Boards
PostPosted: March 19th, 2013, 18:08 
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Joined: December 19th, 2006, 8:49
Posts: 8159
Location: Portugal
Col wrote:
Very useful topic, is there any place to buy that clip-adapter for the programmer? and its model please?


Ebay.
Search for soic 8 test clip

www.ebay.com

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 Post subject: Re: Read/Write Serial Flash on WDC Logic Boards
PostPosted: September 13th, 2014, 3:53 
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Joined: September 13th, 2014, 3:34
Posts: 1
Location: English
hi, all new to this forum.

maybe someone can help me shed some light on this ?

i was wondering if it was possible to edit the flash inside the hdd so lets say i would want to clone it ? like for example the serial no. of a certain drive ? to another hdd ? (what needs to be done if possible? )

can someone please explain to me where the unique serial is written in a hdd ? was this generated from the factory or is it a serial of burned in a chip or the disc itself ? is it possible to replace the serial of a certain hdd ?

I was wondering why a donor board will not work on a WD400BB if the flash is not transferred? what is causing the incompatibility assuming it has the same capacity and model ?

thank you


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