Supervisor password on Lenovo T490 and T490s

[AAAC]

@Macdonald
I've downloaded and extracted the same EC update version as in your file, trimmed the 32-byte header from the EC update version N2IHT42W, here's the complete file (262,144 bytes or 256kB). Check your programmer and select a chip size of at least 256kB or greater and try, it should work.

[Macdonald]

hie i have a Lenovo t490 with supervisor password
i tried to read the MEC1663 using RT809H programmer JTag connection i manged to read the file it with a total size of 192kb the challenge i am getting is when i write it back the file its not switching on
i read my file using MEC1633 #ISP but my my chip is MEC1663
From others i discovered that the file size is 288kb
Serial number
PF-25657G
Type Number
20N3-S7YA06
I am sending the file read
can someone help me thank you

i am using an RT809H programmer

[Deniz]

Re: Supervisor password on Lenovo T490 and T490s

LENOVO THINKPAD
T490 T590 FT490 FT492 FT590 FP531 NM-B901 REV 1
this main supports all the models above and the MEC is also unlocked.

Firstly, thank you. How do I connect jtag to write MEC. Can you help?

[danito]

need many try, look video for timing and procedure

yes, I didn't succeed. in the end, with the old method of moving the resistance, I succeeded.

[Maxpower3]

Lenovo T490 had supervisor password.
After I made it short, I can't enter the bios because it's the user password. Can you help me please?

need many try, look video for timing and procedure

[danito]

T490 or 490S?
try

https://www.badcaps.net/forum/troubl...ss#post3237235

T490 NM-B901 LPC PORT

Thinkpad T490s - NM-B891

Lenovo T490 had supervisor password.
After I made it short, I can't enter the bios because it's the user password. Can you help me please?

[Maxpower3]

helpppppppp

try

[Maxpower3]

T490 or 490S?
try

https://www.badcaps.net/forum/troubl...ss#post3237235

T490 NM-B901 LPC PORT

Thinkpad T490s - NM-B891

[techrecycle]

thanks i tried but not display

[SMDFlea]

Off topic,this thread for T490 and T490s

[SMDFlea]

https://www.badcaps.net/forum/troubl...64#post1864864

[techrecycle]

lenovo T490s admin passwords please unlock thanks


sn :PC19K3VK

[iori1881]

hello everyone ,

i need to unlock bios password for lenovo thinkpad T490

Serial number : PF-1K1XYW 19/16
TYPE : 20N2-0009UK
FT490/FT492
FT590/FP531
NM-B901 REV: 1.0

THANK YOU.

[jozlar]

• 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.

TYPE 20Q1-S24F00
S/N PC-17RSDV
X390
FT491/FX390 NM-B891 REV 2.0

[SMDFlea]

Is it so difficult to type the serial number ?

[SMDFlea]

helpppppppp

• 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.

[jozlar]

helpppppppp

[Maxpower3]

please help mec unnlock

need serial number, read rules

clear 300 to 33F

[Vesko356]

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

You MUST:

• 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.

[jozlar]

please help mec unnlock