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Old 05-31-2020, 06:59 AM   #1
xmasterboss
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Default Supervisor password on Lenovo T490 and T490s

Hy everyone, my first thread. Has anyone succeeded in removing SVP stored in the MEC1663 chip in the T490 and T490s? I have a MEC Progammer but I don't know where to connect the wires. Also I undertand that if you erase the eeprom portion of the chip the serial number, mac address and other information are lost. One other forums someone said that if you solder a new chip the bios writes in it what it has too and the laptop works. I don't really want to begin soldering new BGA chips and destroying the laptop.
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Old 05-31-2020, 07:57 AM   #2
stj
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Default Re: Supervisor password on Lenovo T490 and T490s

that wont work,
look here:
https://www.badcaps.net/forum/showthread.php?t=81573
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Old 05-31-2020, 03:05 PM   #3
xmasterboss
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Default Re: Supervisor password on Lenovo T490 and T490s

I know about the patched bioses which modify hardware ID but there isn t one for the T490s
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Old 09-15-2020, 09:15 PM   #4
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Default Re: Supervisor password on Lenovo T490 and T490s

some one done with it?
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Old 06-02-2021, 06:13 AM   #5
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Default Re: Supervisor password on Lenovo T490 and T490s

i also have one t490s computrace enabled... i need patched dump
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Old 08-29-2021, 01:24 PM   #6
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Default Re: Supervisor password on Lenovo T490 and T490s

Hello guys I need a patch for lenovo T490s, I have one with computrace. Any help would be appriciated
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Old 08-29-2021, 03:57 PM   #7
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Default Re: Supervisor password on Lenovo T490 and T490s

old dxe driver unlock dont work, the 7 gen and up have other method
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Old 08-30-2021, 02:11 AM   #8
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Default Re: Supervisor password on Lenovo T490 and T490s

Thanks for the reply but do you know the other method?
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Old 08-30-2021, 02:35 AM   #9
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Default Re: Supervisor password on Lenovo T490 and T490s

You need RT809 or vertyanov, change jtag_rst resistor from pulldown to pullup. Attach programmer to MEC jtag. Read, erase, rewrite (or just delete password section if you use vertyanov).
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Old 09-08-2021, 05:25 AM   #10
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Default Re: Supervisor password on Lenovo T490 and T490s

Quote:
Originally Posted by RethoricalCheese View Post
You need RT809 or vertyanov, change jtag_rst resistor from pulldown to pullup. Attach programmer to MEC jtag. Read, erase, rewrite (or just delete password section if you use vertyanov).
where is the password section
Attached Files
File Type: rar 1.rar (9.98 MB, 151 views)

Last edited by smiley60; 09-08-2021 at 05:35 AM..
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Old 09-08-2021, 05:47 AM   #11
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Default Re: Supervisor password on Lenovo T490 and T490s

Quote:
Originally Posted by Nico Latour View Post
old dxe driver unlock dont work, the 7 gen and up have other method
where can i find the method i have a t490 locked bios
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Old 09-08-2021, 05:58 AM   #12
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Default Re: Supervisor password on Lenovo T490 and T490s

Quote:
Originally Posted by smiley60 View Post
where is the password section

Not there. Read my quote again

Do you even have vertyanov or rt809?
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Old 09-08-2021, 06:16 AM   #13
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Default Re: Supervisor password on Lenovo T490 and T490s

Quote:
Originally Posted by RethoricalCheese View Post
Not there. Read my quote again

Do you even have vertyanov or rt809?
yes i have rt809h
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Old 09-08-2021, 06:58 AM   #14
RethoricalCheese
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Default Re: Supervisor password on Lenovo T490 and T490s

then move jtag_rst resistor from pull-down to pull-up, attach rt809h to mec jtag, read, write and it's unlocked.
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Old 09-08-2021, 08:19 AM   #15
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Default Re: Supervisor password on Lenovo T490 and T490s

Quote:
Originally Posted by rethoricalcheese View Post
then move jtag_rst resistor from pull-down to pull-up, attach rt809h to mec jtag, read, write and it's unlocked.
dont want any modifying
just read erase write
AND WHERE IS THIS MEC JTAG
IM A LITTLE NOOB
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Old 09-08-2021, 08:28 AM   #16
RethoricalCheese
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Default Re: Supervisor password on Lenovo T490 and T490s

Yes, no modify needed. There's another topic about mec, search for it and read.
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Old 09-08-2021, 09:09 AM   #17
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Default Re: Supervisor password on Lenovo T490 and T490s

Quote:
Originally Posted by RethoricalCheese View Post
Yes, no modify needed. There's another topic about mec, search for it and read.
AND WHAT ABOUT MODIFYING U5502 THE LITTLE 1 MB CHIP
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Old 09-08-2021, 10:16 AM   #18
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Default Re: Supervisor password on Lenovo T490 and T490s

Why?
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Old 10-09-2021, 01:24 PM   #19
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Default supervisor password lenovo t490s

supervisor password lenovo t490s any way to unlock it ????
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Old 01-17-2022, 03:00 AM   #20
andrew25
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Default Re: Supervisor password on Lenovo T490 and T490s

Quote:
Originally Posted by RethoricalCheese View Post
then move jtag_rst resistor from pull-down to pull-up, attach rt809h to mec jtag, read, write and it's unlocked.
can you help me in locating the jtag_rst resistor from pull-down to pull-up.. with picture pointing location please
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