Flashed CW-NAS-ADLN-KV10_noBootSATA_20240624 on N355 board version

Hello, please try the latest version of BIOS. Download address: https://drive.x86pi.com/BIOS/Intel/2.NAS-Mainboard-BIOS/Twin%20Lake(N150%20N250%20N350%20i3-N355)/CW-NAS-ADLN-KV10

Thank you for the BIOS file and for taking the time to answer.

I don't know how to flash the BIOS now, because the board does not beep or POST anymore.

I am having the same issue -- I used RUFUS to build a flash drive with the exact same BIOS as the original poster here, and after booting from it, once it seemed to have finished updating it said it needed to power cycle the device and did so automatically. After that, the video output ceased entirely. I waited several minutes before attempting to power cycle the device manually, which still did not result in any video output. There is no error beep. Fans power up, USB devices power on, and ethernet will show green lights if connected. I have removed all HDDs and SSDs from the system, attempted using a different known-working RAM stick, removed all USB drives, disconnected power and removed CMOS for several minutes, attempted a short of the JBAT pins while the system was disconnected from AC power (but while CMOS battery was installed), etc, all without any change in the systems behavior. Please advise what I should try. I would be more than happy to use the newer BIOS that is listed here, but I cannot physically get the system to load into boot-device selection or BIOS.