Serial device hangs after closing, unable to re-open without first unplugging it

Hi,
Please overwrite the files in the system image and re-flash the device. On the host PC, if you have used SDKManager to flash the system, the two files are in

~/nvidia/nvidia_sdk/JetPack_5.1.1_Linux_JETSON_AGX_ORIN_TARGETS/Linux_for_Tegra/bootloader/xusb_t234_prod.bin
~/nvidia/nvidia_sdk/JetPack_5.1.1_Linux_JETSON_AGX_ORIN_TARGETS/Linux_for_Tegra/bootloader/xusb_sil_rel_fw

After re-flash the device, please check dmesg to confirm the version is 80.05:

[    8.389993] tegra-xusb 3610000.xhci: Firmware timestamp: 2023-02-10 03:48:10 UTC, Version: 80.05 release