Comments on: Disabling a Write Protected BIOS Chip! http://www.mashedarticles.com/computer/disabling-a-write-protected-bios-chip/ When articles speak for themselves Sun, 03 Apr 2011 13:45:41 +0000 hourly 1 http://wordpress.org/?v= By: lank23 http://www.mashedarticles.com/computer/disabling-a-write-protected-bios-chip/comment-page-1/#comment-2306 lank23 Wed, 11 Aug 2010 01:41:03 +0000 http://www.mashedarticles.com/computer/disabling-a-write-protected-bios-chip/#comment-2306 I have the same issue with my Atmel AT49F002NT, the data sheet says this on page 4. "BOOT BLOCK PROGRAMMING LOCKOUT OVERRIDE: The user can override the boot block programming lockout by taking the RESET pin to 12 volts. By doing this, pro- tected boot block data can be altered through a chip erase, sector erase or word programming. When the RESET pin is brought back to TTL levels the boot block programming lockout feature is again active. This feature is not available on the AT49F002N(T)." SO are we screwed due that pin one on the AT49F002NT is not RESET, instead it is DC see note on page one. I am going to try to send 12VDC to pin one, what can it hurt, the pc don't boot anyways...lol I have the same issue with my Atmel AT49F002NT, the data sheet says this
on page 4.

“BOOT BLOCK PROGRAMMING LOCKOUT OVERRIDE:
The user can override the boot block programming lockout
by taking the RESET pin to 12 volts. By doing this, pro-
tected boot block data can be altered through a chip erase,
sector erase or word programming. When the RESET pin is
brought back to TTL levels the boot block programming
lockout feature is again active. This feature is not available
on the AT49F002N(T).”

SO are we screwed due that pin one on the AT49F002NT is not RESET, instead it is DC see note on page one. I am going to try to send 12VDC to pin one, what can it hurt, the pc don’t boot anyways…lol

]]> By: Jan http://www.mashedarticles.com/computer/disabling-a-write-protected-bios-chip/comment-page-1/#comment-294 Jan Tue, 11 May 2010 23:15:25 +0000 http://www.mashedarticles.com/computer/disabling-a-write-protected-bios-chip/#comment-294 hello i have a Atmel AT49F002NT chip wich i also want to disable the bios lock but i dont know wich pins i should connect can you help me? hello i have a Atmel AT49F002NT chip wich i also want to disable the bios lock
but i dont know wich pins i should connect can you help me?

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