Hello, it might be that an incorrect image was burned, causing the boot to fail (the images for RK3506G and RK3506B are not compatible, and the SD card image and the SPI NAND image are also not compatible). Press and hold the BOOT button again to trigger the RESET button. If you cannot enter the download mode, you need to short-circuit the clock pin of the storage medium and GND to make the system enter the MASKROM mode. Please confirm the model you are using. I will provide you with a schematic diagram.

Luckfox lyra zero w

The Luckfox Lyra Zero W has two solutions to address this issue. One is to create a mirrored SD card for SD card booting, and then enter the download mode through the SD's Uboot to erase the SPI-NAND.
The other is to short-circuit the two pads shown in the diagram and power on. After the computer recognizes the Maskrom mode, it can download the correct SPI-NAND image or erase the SPI-NAND.

Can you give me detailed instructions? Ie precisely which image to burn to sd card? And what buttons to press?

"One is to create a mirrored SD card for SD card booting, and then enter the download mode through the SD's Uboot to erase the SPI-NAND"

I have tried the files from LuckFox drive but i keep getting stuck

this is what ChatGpt tells me -

Next steps

Download & extract Luckfox_Lyra_Zero_W_Flash_250717.zip.
Inside you’ll see:

MiniLoaderAll.bin
update.img
boot.img
rootfs.img
uboot.img
parameter.txt


(sizes will be much smaller than Ubuntu).

Flash it to NAND from that folder:

rkdeveloptool db MiniLoaderAll.bin
rkdeveloptool ul MiniLoaderAll.bin
rkdeveloptool wl 0 update.img
rkdeveloptool rd


After reboot:

With no SD inserted → it should boot Buildroot from NAND (at least a working shell).

With your Ubuntu MicroSD card inserted → the new loader in NAND should now fall back to the SD card and boot Ubuntu.

this is the precise file i downloaded -
https://drive.google.com/file/d/1u_iwPa ... drive_link

When i tried to boot it i get -

mike@Mac bill % system_profiler SPUSBDataType
USB:

USB 3.1 Bus:

Host Controller Driver: AppleT8122USBXHCI

USB 3.1 Bus:

Host Controller Driver: AppleT8122USBXHCI

Composite Device:

Product ID: 0x350f
Vendor ID: 0x2207 (Fuzhou Rockchip Electronics Co., Ltd.)
Version: 1.00
Speed: Up to 480 Mb/s
Location ID: 0x00100000 / 2
Current Available (mA): 500
Current Required (mA): 400
Extra Operating Current (mA): 0

mike@Mac bill %

ChatGPT said:

Thanks Mike — that output means the Lyra is still in loader mode (Rockchip Composite Device). It has not switched into a real Linux system (Ubuntu/Buildroot).

When it’s working properly you should see a USB Ethernet Gadget instead.


Any ideas on how i move forward?

Mike

Hello, the device with VID:2207 PID:350F detected by lsusb is either Maskrom or the Luckfox Lyra in Fastboot mode. It is already normal and can be used for image burning. I noticed that you are using a system that seems to be MAC.
I'm not sure about the compatibility of MAC system for image burning on Luckfox Lyra. If possible, it is recommended to try it on the Windows platform.

The method of erasing the SPI-NAND image using the SD card image:
1. Burn the update.img of Luckfox_Lyra_Zero_W_MicroSD onto the SD card.
2. Boot the system using the SD card.
3. Press and hold the boot button and then click the reset button to enter the download mode
. 4. Open RKDevTool (only for Windows)->Advanced Function->Switch Storage->SPIAND->Erase All

do you have links to downloads for the MAC tool and the Windows Tool, where the TOOL actually runs in ENGLISH and not Chinese?

Mac Tool: Windows Tool: If you want to set RKDevTool in English, you can modify the "Selected=2" in the config.ini file.

That mac tool still wont work for me, see here the chain of what i did -

mike@Mikes-MacBook-Air ~ % cd Downloads
mike@Mikes-MacBook-Air Downloads % cd upgrade_tool_v2.3_mac
mike@Mikes-MacBook-Air upgrade_tool_v2.3_mac % ls
命令行开发工具使用文档.pdf upgrade_tool
revision.txt
mike@Mikes-MacBook-Air upgrade_tool_v2.3_mac % ./upgrade_tool
zsh: permission denied: ./upgrade_tool
mike@Mikes-MacBook-Air upgrade_tool_v2.3_mac % sudo ./upgrade_tool
Password:
sudo: ./upgrade_tool: command not found
mike@Mikes-MacBook-Air upgrade_tool_v2.3_mac %