lenovo thinkpad L15 Gen 2 board NM-D271 usb firmware request

[rookieme]

Hello,
I'm searching for a usb firmware for the notebook of the title.
The issue is that it stays at 5V only input from both usb c ports and the controller TPS65994 has been replaced.
The firmware should be the U5502 and I upload the dump of it.
Lenovo provides firmware updates but I was unable to find the appropriate file inside.
s/n: PF33180Q
Thank you.

[SMDFlea]

Hello,
I'm searching for a usb firmware for the notebook of the title.
The issue is that it stays at 5V only input from both usb c ports and the controller TPS65994 has been replaced.
The firmware should be the U5502 and I upload the dump of it.
Lenovo provides firmware updates but I was unable to find the appropriate file inside.
s/n: PF33180Q
Thank you.

Here`s version 1.2.28.0

[rookieme]

Here`s version 1.2.28.0

Thank you!

[trepachka]

For what it's worth. I came about having a ThinkPad L15 Gen 2 NM-D271 with an Intel processor. Both the USB and the dock ports read 5V/0A. My first thought was to check the OVP chip but it appeared to be working as it was passing thru whatever voltage was on the input, same voltage was on the output. My next order of business was to check each line's mosfet Q6001 and Q6002. I removed them both and soldered new ones. No change. I did try to reflow both mosfets. Still no change. This time I decided to bypass these mosfets by running a wire from input to the output. The computer came alive and started charging the battery. So, basically after installing both mosfets multiple times, not a single time these mosfets made a good contact with the motherboard. These mosfets are tiny and have to be reballed as they come in bare from the factory. I also soldered solder balls on each pin on the motherboard. This seemed to do the trick. Both ports are now working and charging the battery. I hope my findings help someone