Lenovo T490s bios password request.

[techrecycle]

please help me to remove bios password



sr:PC-1B48JH

[unleadedblues]

Request to clean bios password.

Lenovo T490S
SN: MJ-0DEGNB
Type: 20NX-S2UC00
Motherboard: FT491/FX390 NM-B891 Rev: 2.0

Dump of (U2101) - MXIC MX 25L25673G

Tried Lenovo AutoPatcher but laptop just beeps on boot with patched file

[OntarioTL]

AA553F -enabled
AA553C -disabled
remove CMOS battery, that's why you weren't able to disable Absolute from bios setup. At 1st boot enter bios setup Security-Absolute (somemtime Computrace) and permanently disable it.

Thanks Volinakis, I will follow your recommendations. I'm sure it will work like the last one.

This was where I am puzzled as I looked at the original BIOS file through HxD and what I though was the enable and disable for AbtState, but it already has AA553C instead of AA5533F. I thought this was for another option that was mixed in. Under UEFItools it showed it as it should so this is why I was getting a headache.

Alright, after examining your screenshot, I gave HxD a shot again. With the search I should have used the "search all" feature which gave me 4 results. One of them had the AA5533F. This was probably one I should have tended to when I attempted to do the fix myself. Like they say, it's hard to teach an old dog new tricks.

Thanks again!

[volinakis]

Ok, so I attempted to modify another BIOS with the same AbtState enabled. I thought it would be easy to modify though UEFItools but of course the option is greyed out. The older UEFItools I've used can extract but it's not as simple as the HEX view from the newer version as it isolates that particular item. I've looked at other posts about how to change this option AA553F to AA553C , but I have noticed from Hexviewer that this option is not always located near the AbtState or it may not be for AbtState at all. My head hurts between this and a E15 Bios issue.

I hate asking for help, but I would greatly appreciate a fix for one more laptop. I want to learn, and I spent a good 3 hours last night at home in front of the screen to find how to go about this. Every time it seems easy on a post, my results are different. I know it will be a slap in the forehead once it clicks on how to do and it's probably pretty easy, but for now I wave the white flag.

Lenovo T490s
TN: 20NY-S3L500
SN: MJ-0CJQ2L
Board : FT491/FX390 NM-B891

AA553F -enabled
AA553C -disabled
remove CMOS battery, that's why you weren't able to disable Absolute from bios setup. At 1st boot enter bios setup Security-Absolute (somemtime Computrace) and permanently disable it.

[OntarioTL]

Ok, so I attempted to modify another BIOS with the same AbtState enabled. I thought it would be easy to modify though UEFItools but of course the option is greyed out. The older UEFItools I've used can extract but it's not as simple as the HEX view from the newer version as it isolates that particular item. I've looked at other posts about how to change this option AA553F to AA553C , but I have noticed from Hexviewer that this option is not always located near the AbtState or it may not be for AbtState at all. My head hurts between this and a E15 Bios issue.

I hate asking for help, but I would greatly appreciate a fix for one more laptop. I want to learn, and I spent a good 3 hours last night at home in front of the screen to find how to go about this. Every time it seems easy on a post, my results are different. I know it will be a slap in the forehead once it clicks on how to do and it's probably pretty easy, but for now I wave the white flag.

Lenovo T490s
TN: 20NY-S3L500
SN: MJ-0CJQ2L
Board : FT491/FX390 NM-B891

[OntarioTL]

there are too many AbtState invalidated. It should have worked since AbtState is invalidated, i did tens of lenovos in that way. Did you enter in bios setup to Security-Absolute and disable it? Remove CMOS battery if you forget to do it and press power button for 30s, start laptop without battery.

I take it back. It worked. For some reason this morning I managed to have it boot without the Absolute activated before I was about to try your suggestions. Strange, but happy nontheless. Thanks for the help!

Now to make my day brighter, I hope to get this E15 working after a botched BIOS update.

[volinakis]

Unfortunately it did not work. I do see what I did on my attempt that screwed me up however. I noticed the difference between yours and hoaca that there were 2 changes where yours was only one. Would that be the issue?

there are too many AbtState invalidated. It should have worked since AbtState is invalidated, i did tens of lenovos in that way. Did you enter in bios setup to Security-Absolute and disable it? Remove CMOS battery if you forget to do it and press power button for 30s, start laptop without battery.

[OntarioTL]

try

Unfortunately it did not work. I do see what I did on my attempt that screwed me up however. I noticed the difference between yours and hoaca that there were 2 changes where yours was only one. Would that be the issue?

[volinakis]

I was experimenting on a T490s that has no password but absolute activated. I want to disable it of course. I thought it would be in the MEC1663 but I was wrong as I know with password reset with the MEC trick works to gets rid of Absolute or Computrace on other models. Secondly examining the last request original BIOS and fix applied by volinakis and hoaca388. I decided to compare my BIOS image and make the two adjustments I see in the fix with no luck. Am I missing something here? Or is the value different per activation and deactivation?

My untouched BIOS image before I made changes.

Lenovo T490s
Sn: MJ-0CJQ2R
TN: 20NY-S3L500

try

[OntarioTL]

I was experimenting on a T490s that has no password but absolute activated. I want to disable it of course. I thought it would be in the MEC1663 but I was wrong as I know with password reset with the MEC trick works to gets rid of Absolute or Computrace on other models. Secondly examining the last request original BIOS and fix applied by volinakis and hoaca388. I decided to compare my BIOS image and make the two adjustments I see in the fix with no luck. Am I missing something here? Or is the value different per activation and deactivation?

My untouched BIOS image before I made changes.

Lenovo T490s
Sn: MJ-0CJQ2R
TN: 20NY-S3L500

[krogs214]

Try

thank you also

[krogs214]

try

hi its working

thank you so much

[hoaca388]

Hi anyone can help i have Absolute Enable but No Bios Password
anyone can disable it?


Lenovo T490s
Sn: PC1F1WZK
Board Number: FT491 FX390 NM B891 FEV 2.0

thanks in advance

Try

[volinakis]

Hi anyone can help i have Absolute Enable but No Bios Password
anyone can disable it?


Lenovo T490s
Sn: PC1F1WZK
Board Number: FT491 FX390 NM B891 FEV 2.0

thanks in advance

try

[krogs214]

Hi anyone can help i have Absolute Enable but No Bios Password
anyone can disable it?


Lenovo T490s
Sn: PC1F1WZK
Board Number: FT491 FX390 NM B891 FEV 2.0

thanks in advance

[Vesko356]

Do NOT post in all caps please.

RULES UPDATE for BIOS requests/offers *AVOID BANNING, READ BEFORE POSTING*
https://www.badcaps.net/forum/troubl...before-posting


You MUST:

• Read BIOS guides, methods, resources and tools
• Try the method at BIOS guides, methods, resources and tools before requesting help
• Explain you were not able to succeed with the methods at BIOS guides, methods, resources and tools
• Use search function in case someone already answered your request
• Provide the full machine model number, serial number (or Service tag, SNID) and the board model number (see https://www.badcaps.net/forum/showthread.php?t=88758 ) ,The serial number, make, full model number, motherboard model and revision (except QR codes) must be written/typed at your request as per the rules. Not as a picture, part of the file name and so on.

[Rashid334]

HELLO EVERY ONE CAN HELP ME REMOVE SUPERVISOR PASSWOR

[piszpunta]

Re: Lenovo T490s bios password request.

I need working mec dump

[volinakis]

Re: Lenovo T490s bios password request.

doesn't work

maybe is EC - i think is MEC1663 - try to write it.

[piszpunta]

Re: Lenovo T490s bios password request.

doesn't work