Hi,
I am new in this community and hope to find some help to flash the BIOS of my Lenovo Thinkpad Yoga L13 Gen3 (21BB). Still haven't found the BIOS. Anyway, nice to be here, and now I'll start searching.

Good luck for all the others as well and Thank you for the service!

bios file from lenovo, laptop usable in windows and so forth, but forgotten supervisor password, can anyone please help remove it,
thanks in advance...

Hi, everyone.
I'm new here, got a lenovo thinkpad L13 yoga 20r5 failing to boot up with 0177: Bad SVP data error then it powers down not able to do anything. Please help

Thanks in advance....

Hello everyone,

I need a BIOS for the Thinkpad L13 Yoga Gen 4.
S/N: PW05KQH7
Type Number: 21FR-0005GE

A recent BIOS update from Lenovo has bricked the laptop.
Currently there is no charging light.
According to Lenovo's website, the BIOS version R26ET41W/EC R26HT28W (r26uj08w) has been withdrawn due to issues with the system failing to power on after the BIOS/EC update.

L13 G4, AMD - 21FQ-S04R00 / PW-067ZHK
Powers on, no image. Fans do spin when heated up, power button long press works to shut down and then press to start unit again.
No keyboard led blinking (except just a normal 1sec ESC/F1/F4 leds right after power button press).

What I already tried:
- extracted Lenovo update. .FL2 file contains EC image that appears twice in EC dump (similar to Yoga variant described here), i replaced both. No change in behaviour
- Truncated .FL1 file from the extra header and cut down to BIOS flash size (comparing in hex editor data aligns...

Hi dears i have an LENOVO THINKPAD L13 YOGA no display i had change me region with fitool no luck
if someone can help me here i'll be very grateful.
The S/N is not readable on back cover
Monther board :LAR-1 MB 18834-1N 448 0HK02. 001N
Here's old dump with no display

...

Eureka, m1ch43lzm because of you I found it! When you said that "It's normal to be missing according to this, it comes on when needed" about the iGPU voltage, I decided to change PU402 as it seemed a little fishy with the voltage readings I was getting from it (input instead of 5.0V I was getting 4.8V). And that was it, it's now working as expected!

Should also mention that I had come across this thread which made me change the settings in Windows - good to know: https://forums.lenovo.com/t5/ThinkPad-L-R-and-SL-series-Laptops/Horrible-power-limit-throttling-issue-on-Len...

There's two of those NX20P5090UK, one for each USB-C port, check both
The TPS65988DJ controls both load switches, it's supposed to receive an "ACK" signal (low) when the switch is conducting

Datasheet of the NX20P5090 https://www.nxp.com/docs/en/data-sheet/NX20P5090.pdf


The ACK signals go to GPIO1 and GPIO2 for each port, have to check the Thinkpad L13 Yoga schematics (where the dump I linked came from)
https://www.badcaps.net/forum/troubl...obile-devices/...

Worth a try cutting the first 0x100000 (1048576 bytes) from the dump posted here, as it seems to repeat over and over
https://www.badcaps.net/forum/troubl...34#post1511939
Attached here

Schematics here: https://www.badcaps.net/forum/troubl...im-7-14are05-d...

You can request the PD firmware in the bios requests sub forum. You can try one thats posted for a different model and see what happens - https://www.badcaps.net/forum/troubl...34#post1511939

Hello,

i need Schematics and Boardview for a Thinkpad L13 Gen 2 - 20VH

Model LAR-2 MB
Board 19837-1
MPN 5B20Z48275

Thank you in advance

Hello

This device came in with a strange problem,
The laptop starts by resetting the time and date settings every time it is turned on, as if the RTC battery was removed.
RTC battery is brand new, 3V is present at Q2502
No liquid damage or corrosion, board is clean
Same on AC or battery

schematic and boardview can be found here
https://www.badcaps.net/forum/troubl...hematic-and-bo...

This is the bios that messed all up... https://pcsupport.lenovo.com/us/en/p...ry=BIOS%2FUEFI

I know I shouldn't flash BIOS which are just a day old... I guess now I've learnt my lesson the hard way...

Hello guys, kindly assist.
Lenovo yoga l13 Gen 2 laptop comes one but no display

Thinkpad L13 Yoga Gen 2
SN: PW-00JRVV
Type Number: 20VLSR700...

Could somebody, please help me? I was able to extract 32mbs from the web update, but I couldn't find the BIOS 2 16 mb part. If somebody has it, could you send it for me? That would be very helpful now.
Motherbord sn:223002-1
448-osk02-001
The sticker on the back is worn off, not read....