Hi @Sam_Gao
Thanks for reply. I'm using IMXRT1060-EVK board for the development.
Our requirement is to perform firmware update through U-disk method. We've successfully tried the OTA bootloader ISP method as described in RT1060 OTA bootloader ISP and swap rollback usage - NXP Community ,In this approach, we were able to detect the USB-HID interface using the MCU Utility Tool and complete the process smoothly.
However, when attempting the U-disk method by following MCUOTASBLSFWUG.pdf (as in below screenshots)


noticed that the MCU ISP setting is disabled. The documentation instructs us to enter Serial Download Mode, which, if I'm not mistaken, requires hardware switch configuration.
IIn our case, modifying the hardware configuration on the board is challenging. Is there any way to perform U-disk OTA updates on the IMXRT1060 without hardware changes—perhaps through application settings or a specific piece of code?
Thanks & Regards,
Pavan.