Question Lian Li Galahad II LCD AIO no longer works after updating it ?

[SnakeCrayola]

I have had my build for nearly a year and never had an issue. After performing a manual update of the
GA II LCD AIO, I restarted the computer and the LCD screen on the AIO no longer worked.
In Device Manager, I could see the LCD no longer being detected and an "unknown device" showing in its place.

The update software no longer detects the AIO, so I cannot try updating again. I have checked that the USB header is plugged directly into the motherboard and the USB-C cable is directly connected to the AIO screen. I have re-installed L-Connect 3 and recycled the AIO and PC power but the screen still does not turn on.

Is there a way to re-add the device?

System Specs:
Mobo - Asus PRIME X670E-PRO WIFI
AIO - Lian Li Galahad II LCD SL-INF
CPU - Ryzen 7800X3D
GPU - 4090
PSU - MSI A1000G PCIE5 1000 W

https://imgur.com/a/XFz14Ig

 

[Lutfij]

Welcome to the forums, newcomer!

Did you follow through this guide;
https://drive.google.com/file/d/1aPcXuQNS-ZVsKmuaPeOj0P27GEkBT1gi/view
?

What BIOS version are you on for your motherboard? Try and manually reinstall the chipset driver for your platform, sourcing the driver from AMD's support site in an elevated command, i.e, Right click installer>Run as Administrator.

 

[SnakeCrayola]

Hi there!

Thank you for the suggestion, I had been running the latest BIOS version and just done a chipset driver update but no luck 🙁.
When I originally followed the guide it completed the update, but the LCD screen was black. I attempted a restart to fix the issue, but it hasn't turned on since. Even when booting the PC, the Lian Li logo doesn't show so no idea what is happening with it!

 

[punkncat]

Pardon as I don't know the age of the AIO in question, but have you tried to contact Lian Li about this directly?

In all my uses and dealing with them, they seem to be very stand up. It is my hope that they may also have a good answer for your issue.

 

[SnakeCrayola]

Pardon as I don't know the age of the AIO in question, but have you tried to contact Lian Li about this directly?

In all my uses and dealing with them, they seem to be very stand up. It is my hope that they may also have a good answer for your issue.

No problem, I contacted them via their support page so will understandably be some time before I get a response. I was just wondering if there was anyone else that faced the same issue and may have been able to resolve it.

 

[SaloUA]

I have had my build for nearly a year and never had an issue. After performing a manual update of the GA II LCD, I restarted the computer and the LCD screen on the AIO no longer worked. When going into device manager, I could see the LCD no longer being detected and a "unknown device" showing in its place.

The update software no longer detects the AIO, so I cannot try updating again. I have checked that the USB header is plugged directly into the motherboard and the USB-C cable is directly connected to the AIO screen. I have re-installed L-Connect 3 and recycled the AIO and PC power but the screen still does not turn on.

Is there a way to re-add the device?

System Specs:
Mobo - Asus PRIME X670E-PRO WIFI
AIO - Lian Li Galahad II LCD SL-INF
CPU - 7800X3D
GPU - 4090
PSU - MSI A1000G PCIE5 1000 W

https://imgur.com/a/XFz14Ig

Try my procedure. I had the same issue and managed to sort it out yesterday.

One day, I decided to update the firmware of my Lian Li Galahad II 360 LCD using the L-Connect 3 utility. After the update, the screen went black and stopped working. I tried everything—reinstalling drivers, reconnecting the USB cable—but nothing helped. In Windows 11 Device Manager, the device would either show up for a few seconds and then disappear, or it would remain in the hidden devices list with a Code 45 error, identified as an HID device.

After that, I disassembled the pump and discovered that it is based on the Nuvoton N9H26 microprocessor paired with NAND memory. After connecting via UART, I saw that the firmware boot process crashed at the kernel stage(Msg like: jump to kernel, kernel aaaaaa). This indicated either a problem with the memory or a corrupted kernel, likely caused by the failed firmware update through L-Connect 3.

After that, I found two pins on the board labeled GND and NDO, located next to each other. When I shorted them and replugged the USB cable, the board entered boot mode.

Here is the step-by-step procedure:

1. Connect the USB cable from the board to your PC.
2. Short the NDO and GND pins using a jumper or tweezers.
3. Make sure the device is recognized as USB Mass Storage or MPWUSB in Device Manager.
4. Launch Nuvoton Turbo Writer for N9H26 (I downloaded it from GitHub).
5. Go to the SDRAM tab. (Click Connect to board/device)
6. Select the firmware .bin file in the "Image File" field, (u can take it from the official Lian Li website, there are a lot of BINs for different devices, seek for manual firmware installation). In my case, it was HH015CHS_N9H26HSSQ_GALAHADII-Vision_V20102E_pid7395.bin
7. Set the address field to 0x0.
8. Click "Download."
9. When the process is ended, remove the NDO–GND jumper.
10. Reconnect the USB cable.
11. Launch L Connect 3, and the board should come back to life. The display turns on, and the device is recognized as LianLi-GA_II-LCD_v1.4.

I hope this helps someone save a few weeks of their life and a lot of nerves. I couldn’t find any similar instructions online, so I decided to share my experience.