mec 16xx dump with info block

[dinarte]

Re: mec 16xx dump with info block

the solution presented in this topic only works for intel models, right?

also, does it work with rt809F or just with rt809H?

[SteK]

Re: mec 16xx dump with info block

Have a look at this video, it explains alot, unfortunatley audio is in Russian but you can get the general idea.
https://www.youtube.com/watch?v=XBcINkWU7xM&t=27s

[spider300]

Re: mec 16xx dump with info block

Can you help me after reprogramming mec 1663 the password still remains is there any solution ??

[AAAC]

Re: mec 16xx dump with info block

@spider300
The first time we did one had a similar problem, then I suggested my friend to completely disconnect all source of energy for 1-2 minutes, after that the Supervisor Password was gone, may have been a coincidence or not, but that made a difference at the time.
What's the ThinkPad model number and EC/KBC programmer you are using?

[spider300]

Re: mec 16xx dump with info block

I use svod 4 device ThinkPad T14s

[couillu76]

Re: mec 16xx dump with info block

tried to unlock x13 gen 1 can read and write mec but password wont disappear
what i doing wrong help ,using svod4

[pokyss1]

Re: mec 16xx dump with info block

Looks like JTAG reset resistor is marked in red box. Move the resistor next to that capacitor on the empty pads.

I will test it tomorrow.

hello thank you for this photo I have a vertyanove can you show me how I do it I have tag thank you for unlock bios t490s lenovo

[pokyss1]

Re: mec 16xx dump with info block

Looks like JTAG reset resistor is marked in red box. Move the resistor next to that capacitor on the empty pads.

I will test it tomorrow.

hello I tested it on a lenovo t490s he told me invalid jtag

[volinakis]

Re: mec 16xx dump with info block

hello I tested it on a lenovo t490s he told me invalid jtag

Read post #239 you have photos.

[coolshrimp]

Re: mec 16xx dump with info block

I have a Lenovo T14 I need to remove Bios password.

I have the RT809H Programmer, I connected wires to JTAG but cannot read chip (MEC-1663).

Iv attached diagram of how its wired up.
I used diagram from another T14 model but the board is slightly different i cant find a diagram for my exact board.

Did I wire this right?
Does CLK go to TCK jtag point?
Someone said I need 10K pull up resistor, what points do i connect that to?
I don't see the missing resistor other point to my boards a bit different.

I know you cant edit out the password but if you re-flash the dump it clears iv been told. (rt809h + read MEC1663 + write MEC1663) then you use the maintenance tool to restore serial etc.

[akhtian]

Re: mec 16xx dump with info block

Hi. My t480s is not working, need EC rom for it. Please, help me) Give me working one)

[exe557]

Re: mec 16xx dump with info block

I have a Lenovo T14 I need to remove Bios password.

I have the RT809H Programmer, I connected wires to JTAG but cannot read chip (MEC-1663).

Iv attached diagram of how its wired up.
I used diagram from another T14 model but the board is slightly different i cant find a diagram for my exact board.

Did I wire this right?
Does CLK go to TCK jtag point?
Someone said I need 10K pull up resistor, what points do i connect that to?
I don't see the missing resistor other point to my boards a bit different.

I know you cant edit out the password but if you re-flash the dump it clears iv been told. (rt809h + read MEC1663 + write MEC1663) then you use the maintenance tool to restore serial etc.

Actually you have to move the resistor for reading/writing and move it to original pad after you finished.

[coolshrimp]

Re: mec 16xx dump with info block

Actually you have to move the resistor for reading/writing and move it to original pad after you finished.

So I have the board view and schematics so I know I have the right points.

I have tried:
With and without 10k resistors on Jtag Pads 1-4
Pad 6 rst seems to be 3.3v but only has 3.3v when I put the missing resistor for that pad.
Iv tried with battery/charger connected.


But still I get error can't detect a chip model 0xFFFFFFFFF
Iv seen some can't be read and you simply get a donor EC file to simply wipe and write it back to the chip. But the chip would at least be detected and just fail reading correct?

Next step would be using the keyboard header points they have 10k resistors inline on the board.

[akhtian]

Re: mec 16xx dump with info block

Connection to from laptop to RT809H is wrong. Check it. I got similar situation yesterday))

[coolshrimp]

Re: mec 16xx dump with info block

Connection to from laptop to RT809H is wrong. Check it. I got similar situation yesterday))

LMAO who can see what I did wrong ����

Now while that was an issue, Iv fixed that but I still can’t get a read.
Are the pads wrong?
As I traced them back to the board.
Or should I be using the built in isp port and connecting Tx/RX?

[akhtian]

Re: mec 16xx dump with info block



Connect it directly by small cables like on this picture.

[coolshrimp]

Re: mec 16xx dump with info block

Connect it directly by small cables like on this picture.

See Image This Is How It is wired and where I put a jumper for R/W.

[akhtian]

Re: mec 16xx dump with info block

where did you find junper place?

[coolshrimp]

Re: mec 16xx dump with info block

where did you find junper place?

From board view the white line it connects to a pad (1) and a resistor(circled in yellow) the connected pad (1) goes no where looks like a test point, the resistor is missing putting in the resistor gets 3.3v to the pad. and is connected to #RESET 3.3v line.

Also every other pad connects directly under the MEC chip, only that pad (6) has an inline resistor (the missing one) on its way to the MEC.

That’s prob why 10k resistors are recommended on the pads 1-4 but I seen 2 others say they’re not needed.

[exe557]

Re: mec 16xx dump with info block

This resistor needs to be moved from red to yellow position.
If you cannot read after that, chip is locked. Just write extracted dump from bios update and it will be ok