Thinkpad T14 Gen2, Ryzen 5650U SN:PF3FBLF4 Type 20XL - dead after BIOS update

[szogun]

Hi folks,
In course of preparation "new" gear for my daughter, i`ve updated BIOS in Thinkpad T14 Gen2, Ryzen 5650U SN:PF3FBLF4 Type 20XL.
After completion of process, notebook should reboot, but instead didn`t started at all.
It dosen`t react od power button at all, nor plugin in charger.
I`ve disconected main battery for almost an hour (with cmos battery also) - it didnt helped.
On powerbutton pins, there is 3.3V, charger and all of circuit seems fine
So, there is a dump from bios chip, could somebody help me please, to fix this piece of sh@t
Thank you in advance

[volinakis]

Hi folks,
In course of preparation "new" gear for my daughter, i`ve updated BIOS in Thinkpad T14 Gen2, Ryzen 5650U SN:PF3FBLF4 Type 20XL.
After completion of process, notebook should reboot, but instead didn`t started at all.
It dosen`t react od power button at all, nor plugin in charger.
I`ve disconected main battery for almost an hour (with cmos battery also) - it didnt helped.
On powerbutton pins, there is 3.3V, charger and all of circuit seems fine
So, there is a dump from bios chip, could somebody help me please, to fix this piece of sh@t
Thank you in advance

try

[szogun]

try

Unfortunately, no luck. Still stone cold

[volinakis]

Unfortunately, no luck. Still stone cold

bios image was extracted from update. Check soldering.

[szogun]

bios image was extracted from update. Check soldering.

Checked, still nothing.

[danito]

Checked, still nothing.

try

[szogun]

try

Thank you, but still nothing.
Is it correct, that pin 1 (CS) is constantly in high state (1.8V)?