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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Supervisor password on Lenovo T490 and T490s
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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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Re: Supervisor password on Lenovo T490 and T490s
Originally posted by RethoricalCheese View PostYou 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).Attached FilesLast edited by smiley60; 09-08-2021, 05:35 AM.
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Re: Supervisor password on Lenovo T490 and T490s
Originally posted by rethoricalcheese View Postthen move jtag_rst resistor from pull-down to pull-up, attach rt809h to mec jtag, read, write and it's unlocked.
just read erase write
AND WHERE IS THIS MEC JTAG
IM A LITTLE NOOB
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Re: Supervisor password on Lenovo T490 and T490s
Originally posted by RethoricalCheese View Postthen 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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