"Yes, at first I used a clip, but later I desoldered the chip. For programming the chip, I used the CH341A. After saving the file (or rather, what was left of it), I erased and reprogrammed it with files found on the forum. Today, I made a backup of the KB9052 chip and reprogrammed it using the RT809H, but the issue remains: the blue LED turns on for a few seconds and then turns off. I'm attaching the original KB9052 file."...

"None of the BIOS files from the previous posts work on my PC. I found the original backup, or rather the one that was read from the original chip. I'm attaching it, thank you."...

the original file is no longer readable....

I have an Acer A315-56 notebook, s/n: NXHS5ET0040471F2993400, with motherboard FH5LI LA-J801P. After disconnecting the battery to replace the keyboard, it no longer boots. The blue LED turns on for a few seconds and then immediately turns off. I used the CH341A programmer to flash the BIOS, but without success. Does anyone have a working BIOS? Can someone tell me how to flash the EC.bin as well? Thank you.