deleting the password as described above, there was not only a message about missing date and time, instead the message that flashed up briefly, was
0177: Bad SVP data, stop POST task.
0271: Check date and time settings.
The solution is very simple. Instead of deleting specific regions in the EC dump, you need to erase the EC. Then disconnect the BIOS battery, shorten the two pins for the BIOS battery on the mainboard, connect the BIOS battery again and then start the mainboard. The EC will be flashed from the BIOS as it is done for almost all ThinkPads. It takes some...
rumpumpel1
Badcaps Veteran
Last Activity: Today, 12:49 AM
Joined: 07-16-2019
Location: munich
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Last edited by rumpumpel1; 06-10-2026, 02:41 AM. -
thank you, I forgot to show the second instance starting at 0x003F420.
Do you have some experience with the T14 G5 AMD?
After flashing the EC with the cleaned image and after re-soldering the BIOS chip I have the problem, that the mainboard starts, it shows shortly the message about missing date and time and then it switches off....Leave a comment:
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Hello,
I want to delete the SVP from my T14 G5 AMD.
Is this the correct region which needs to be replaced by 0x00?
...Leave a comment:
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Since this adapter is now available, this is a simpler solution. But keep in mind, that for instance only the shipping to Germany makes a total (including taxes, all kind of fees) of about 50€.Leave a comment:
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do not use the Web interface, use the -> Download ListLeave a comment:
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If you're feeling adventurous, you can try replacing the PCH.
here https://support.lenovo.com/de/de/par...artslookuptile you can find a replacement board for 80-90€.
partnumbers are 01YU209 01YU211 01YU212 01YU219Last edited by rumpumpel1; 05-15-2026, 02:02 PM.Leave a comment:
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I think you can increase the injecting voltage up to 1V. But if you still can't see anything with the thermal imaging camera, things get tricky.
I assume the visual inspection of the board, especially the PCH, didn't reveal anything?Last edited by rumpumpel1; 05-14-2026, 01:45 PM.Leave a comment:
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0.22 A is quite a lot. With a thermal imaging camera, you should be able to see where the current is flowing.Leave a comment:
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Did you open PJ10 in order to check whether the short is before or after PJ10?Leave a comment:
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for MEC1503 there are two possibilities to remove a password:
1. https://www.badcaps.net/forum/troubl...-and-x13-gen-2
2. search on ebay...Leave a comment:
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I have used the autopatcher successfully many times in the past, but this time, with a P52s (20LB), I’m having a problem. As usual, I read out the BIOS and patched it using the autopatch script. No error message appeared. After flashing the patched BIOS, the laptop booted up, but after a while an error beep sounded. The Lenovo Diagnostics app identified the beep code as 010225. Google didn’t have much information about this error. To be on the safe side, I swapped the RAM module, but without success. Then, just to be sure, I flashed the original BIOS. The laptop booted up normally, just with...Leave a comment:
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ok, here comes the EC dump: ...Leave a comment:
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T14 Gen 1 AMD (NM-C801): Can someone please tell me which section of the EC dump I need to overwrite with 0x00 to delete a BIOS password?
I suspect the section starts at 0x0003EF00, but I’m not sure how much data I need to overwrite.Leave a comment:
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Since I don't have detailed knowledge of BIOS, it was just a guess, and it worked....Leave a comment:
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and this is how it should look after the deletion: ...
Leave a comment:
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This is what my dump looked like: ...
Leave a comment:
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X1 Yoga 4th (NM-B861)) dead
I have a ThinkPad X1 Yoga 4th that won't start. I am testing the bare motherboard without the BIOS battery and comparing the measurements with a working motherboard of the same type.
The RSMRST and PWRSW_EC signals are OK, but the PCH_SLP_S4 signal is missing. Can I conclude from this that the PCH is defective?
schematics can be found here: https://www.badcaps.net/filedata/fetch?id=2088578 -
Some posts in this forum suggest that the Thunderbolt firmware issue is responsible for the 5V issue described.Leave a comment:
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The X280 has two USB-C ports. Do they both behave the same way?
Did you check this: https://www.badcaps.net/forum/troubl...olt-3-firmwareLeave a comment:
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You need to locate the password in the EC dump. Here are some examples:
E14 Gen 2 / 3 AMD: ITE8227E Board: NM-C771 / NM-D481
- two lines starting with 0x0003D3C0
- six lines starting with 0x0003EF00
E14 Gen 4 AMD: ITE-IT8227E-256 Board: NM-E501
- five lines starting with 0x0003EF00
X395: IT8186VG-192
- six lines starting with 0x0002EF00
X13-Yoga Gen 1: NPCE388PB0BX
- block 36000 - 366FF
T14 Gen 2 AMD: IT5679VG Board: NM-D451
- six lines starting with 0x000492F0
always overwrite...Leave a comment:
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