你好，
我收到了一块 TURZX 8.8 寸的小屏幕，PCB版本为1.4，这似乎是一个较新的硬件版本。
通电后，屏幕会短暂显示一个静态背景图像几秒钟，然后变黑。但USB设备完全无法被系统识别，电脑无法检测到任何设备。
根据我的分析，这个问题可能是由于：
没有预装固件
设备处于bootloader状态但未刷入固件
出厂时固件刷写错误
如果可以的话，能否提供这款设备对应的固件文件（.bin）？我可以使用 SPI 编程器直接写入芯片，从而恢复设备的正常使用。
谢谢！
Display not detected – PCB Revision 1.4 – Possibly missing or corrupt firmware
Hello,
I received a TURZX 8.8" display with PCB Revision 1.4, which appears to be a newer hardware version.
The screen powers on briefly and shows a static background image for a few seconds, then turns black. However, no USB device is detected, and the display does not enumerate on USB at all.
From what I can tell, the unit may be:
shipped without firmware
stuck in a bootloader with no firmware
or flashed incorrectly from the factory
If possible, could you please provide the correct firmware binary (.bin) so I can flash the chip directly via SPI programmer? This would resolve the issue and could help others with PCB Revision 1.4 experiencing the same behavior.
Thank you.