# Flashing Failure: USB Write Timeout and Connection Issues on Nvidia Jetson Orin NX 16

I saw some weird parts here

  1. Sdkmanager never guarantee that can work on any custom board. If you want to validate if this is really related to PCN, then you should use NV devkit.

  2. You told me you are trying Jetpack6.1 but your log is still rel-35.3.1.

  3. The error you just shared is something else. If you see an error coming right after “BR_CID” is printed, then please refer to
    Jetson AGX Orin FAQ

If you don’t know what I am talking about, this is from your log.

[ 0.2773 ] BR_CID: 0x80012344705DF1864400000015008140
[ 0.3082 ] Sending bct_br
[ 0.3552 ] ERROR: might be timeout in USB write.
Error: Return value 3

Again, this case is only for the case that your error is printed right after “BR_CID”. If you hit anything else, then it is something else.