I post here my experience in this saga of removing the password from this damn laptop!
I bought again from another seller a pair of MEC1503 chips, after arriving I removed it from the same machine which I reported in this same post, and installed it, and the first chip when turning on the machine already gave me the option to enter the bios without asking for a password! Confirming so that you don't need to do anything that was said here, for example install dump with clean DMI! It worked perfectly!...

Can you provide me with a bios clean DMI so I can flash? I passed a clean ME and the machine kept asking for a password to enter. Can you clean one so I can test it?...

Continuing the saga of trying to unlock the password of these bios of this damn, I leave here my attempts, following the steps that I followed in this topic.
After buying 2 Chip MEC1503 on AliExpress, both came with defect, one was short and the other with password too!
So I followed the steps mentioned here and tried to read and write on this chip using a SAS (Vertyanov) and a unsuccessful RT809! The chip does not go out or read, but can be identified.
I leave here an updated image of how to enable the JTAG on this board, remembering that you have to insert all 5 resistors 10k...

Complex situation, because there are not many defective machines T14, not here in my country. I bought 2 pieces on Aliexpress and it came with defect and blockage. Terrible experience!...

It wasn't necessary since the pair of chips came already packed! But I had the surprise of a
Be defective and the other has a password! Ask me a question? Can I use a new chip or does it need to be programmed like the one I bought?...

After installing the second MEC chip, the machine turns on normally, but I had an unfortunate surprise! The chip sent by the vendor has a password to access the bios! I was deceived! I'm going to dispute on Aliexpress because these chips are not cheap. I'm very frustrated with this whole situation, I wasted hours and hours of my time to get to this point! I can't believe I waited for 14 days to receive 2 MEC chips with different defects. If the adm authorizes it, I'll post the link to this larápio's store here!...

Really, after I remove the MEC and return with the original, the machine now has 20v, thus proving that the chip was defective. I don't have a stencil for this chip so I managed to remove the defective one very perfectly, so much so that even the spheres were on the board, so I put the original back. Lucky I bought 2 MEC1503, I'll test the other one and see if it works or if it's also defective....

Sorry friend, but it doesn't make sense! The machine should at least give 20v to the source even if it didn't turn on. I will resort to other options. See that in the friend's post here in the group he didn't do any of this, he just changed the MEC installed and corrected the parameters with U1 pendrive. He practically made a guide to get around this damn lockdown! The board is the same as the T14s (NM-D352). Anyway, thank you for the support....

I confess to you that what happened in your case may be pure coincidence!
I flashed it using 8 different files on the u2202, and the machine maintains the same consumption (5v-0.2A), and not even the power LED lights up.
Do you have the file you used on this machine so I can test it here?...

In my case the machine is at 5v-0.200A. Do you really think this can solve?
Ps: the consumption of 0.140A of the image is because it is without the battery....

The machine worked normally before, when changing the MEC1503 chip, shouldn't the machine turn on? Have you ever done this before?

See this experience of a friend of the group: https://www.badcaps.net/forum/troubl...ce=chatgpt.com...

Excellent explanation! But the images of the post are not showing. Can you upload them to the post or repost the message in a quote for yourself? Thank you for sharing this experience!

I bought the MEC1503 on Aliexpress ready to use already programmed "according to the seller" the chip arrived I made the replacement very carefully, and at the end of the process the machine didn't even turn on. He is accusing at the source 0.200 of consumption....

Really! I don't know this machine, so I clearly see the board model! When you have it in hand, please post the result, we look forward to seeing it happen....

In the description it says it's this model, but me honestly? I don't think it's MEC1503 that he's programming! It doesn't show from the beginning of the video, I believe it's just a video to have views! They say that to read or write in this MEC, it is necessary to have a 10k resistor at some points on the board....

And some "T14 Gen 2 intel" that you tried worked?...

I heard that this method doesn't work for this model. And it's very risky to kill the machine! I've already done it in other models like T14 gen1....