Hello
I was able to update my Luckfox Pico Mini B board with this manual using upgrade_tool with this Luckfox_Pico_Mini_B_Flash_250429.zip

When connectiong to usb it's booting a blinking (every ~1s)
I can see usb device with lsusb:
Bus 000 Device 001: ID 2207:0019 Fuzhou Rockchip Electronics Co ...