vidvansh
Member
Last Activity: 08-23-2026, 08:39 AM
Joined: 03-19-2025
Location: Canberra
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Hi , I have a laptop which is i think is zero touch technology Autopilot locked. When i make edit in BIOS by replacing AA553F with AA553C. It does not show for the first install. But when i update the files and reset the Laptop. Then i get the autopilot screen again after the reset.... -
Can someone show me where is the BIOS chip located in dell latitude 7440...Leave a comment:
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has anyone got any success in reversing the algorithm? I have tried but no luck. Have anyone any idea where to look for the master password reverse algorithm?Leave a comment:
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Have you used RT809h to read bios chip 74m25jweiq? what option have you used?...Leave a comment:
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Lenovo Thinkstation P620 Bios Request
I have a Lenovo Thinkstation P620 which is not turning ON. Fans are spinning but no display.
I think it is bios error. I tried to read bios from chip winbond 74M25JWEIQ ON RT809H programmer but it was not in the winbond list. I read with defaults options but all the reading are just blank bins. Can anyone help me fixing the my PC
Model: Lenovo Thinkstation P620 30E1S66110
Serial: PC2AK0M7 -
Lenovo Thinkstation P620 schematics
Does anyone have schematics for Lenovo thinktation p620 type 30E1? -
I has the same issue with the same chip. i think they purposely build it this way so no one can work on it.
I has to buy new chip to make it workLeave a comment:
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Need help removing BIOS password from my Lenovo T480s 20L8
Serial : PC0V3ZRN
Motherboard: ET481 NM-B471 Rev 1.0
I tried using the patched but after programming the chip. Laptop did not turn ON and when i connect charger. Power button flash 3 times and then nothing happens. I programmed back the original file but it showing the same symptoms.
I removed the chip from the motherboard.
20L8-S4S00...Leave a comment:
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I have a Dell Latitude 5350
ST: 97XDL34
Motherboard : 223102-1 TK65V$CA
Bios Chip: 25lr512meyig
I removed the BIOS chip and read it using RT809H but i showed nothing so i used algorithm GD55R512ME@WSON8 8X6 to read the chip and then used patcher to patch it and soldered it back again.
But there is no output and the Battery LED turn Amber when pressed power button. Can anybody help ?
attached read file for reference...Leave a comment:
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I tried the file you provided. It is still showing the organization name when i reinstalled the windows....Leave a comment:
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I have seen there are some sellers on ebay which are charging 120 aud for the master password. I am also interested in learning and reverse engineering about it but i have no idea where to start from.Leave a comment:
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Service tag:5DS3473. I have attached the original bios....Leave a comment:
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I have a Dell Lattitude 7410 with autopilot.
BOARD:BOARD~FDX40 LA-J261P REV:1.0(A00)
I tried changing the service tag and then tried the method from this thread. But the laptop is still showing that it is Autopilot locked. I am looking for a way to permanently remove the lock.
I there any another ways to try to remove it from the device permanently.Leave a comment:
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Thanks for your reply. I am really new in hardware and i don't know much about all the components .
I wanted someone to confirm on what part i need to order to fix my laptop....Leave a comment:
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Dell Latitude 5500 EDC41 LA-G891P - Parts help
I was trying to remove bios password from my dell latitude 5400 by removing and programming BIOS chip and i accidentally blown away 1 part above the BIOS chip which i think is a resistor. I looked at boardview of it and i came to a part R_0201.
Can anyone help me figure which part should i order to fix it or will there be any workaround to run the laptop.
I have attached the image of the part which i am missing.... -
Black color capacitor got blown away from here which was stuck under the heat sink. I soldered it back and it worked.
Can anyone help me identify what part it is called so that i can order some as i have one dell latitude 5400 where 1-2 capacitors are blown while removing bios chip and i cannot find them on the motherboard....Leave a comment:
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I tried this file. It did not worked for me. I will try another file posted above to see if it works.
Is there any easy way to read write wson8 chips?? Like any probe which can be used on dell laptops as bios chips on dell 7410 does not have legs to make contact with a probe. It is really hard to desolder and solder chip again and again....Leave a comment:
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I wrote the original file to the chip. It is booting fine. I think there is some issue with the patched file. Is there anything else you want me to try.Leave a comment:
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I removed the heat sink and these was a capacitor which got blown away from near to Bios chip, i soldered it back looking at old pictures to confirm where it should be. Now the laptop is booting fine.Leave a comment:
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I flashed the chip with original dump and soldered it on the motherboard. no output. same issue of no activity and amber light when power button pressed.
I set down bios chip 2-3 times to confirm it is making contact with the board. Is there anything else i need to try....Leave a comment:
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