Hello SMDFlea,

thank you, for your support.

This is the device from which I created (and uploaded) the BIOS backup, and it no longer starts after the backup.

Lenovo X1 YOGA Gen4
Type 20QG-S5250Z
S/N : PF-1C610G
Mainboard:
PSL10P97747
FRU:01YU380

Hello dear forum members,

I own two Lenovo Yoga X1 Gen 4 laptops. One of them had a touchscreen problem, and I tried to fix it by externally flashing the BIOS. Unfortunately, I didn’t save the original BIOS and accidentally flashed it with a faulty one. After that, the device stopped working completely.

I then had the idea to make a BIOS backup from the other Yoga X1 Gen 4 (same hardware) and flash it onto the non-working device.
Nothing was flashed here — the BIOS was only backed up.

I created the backup using a CH341A Black programmer and NeoProgrammer....

Hello everyone,
my name is Martin and I'm from Germany. I try to repair my electronic devices by myself as far as I can.
I've now reached a point where I need some support, and I hope someone here in the forum can help me.
I wish everyone lots of success with their projects!