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...
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