Content originally posted in LPCWare by kendwyer on Tue Jul 05 16:01:01 MST 2011
This is mentioned in the User Manual:
[I]If the USB ISP mode is entered on power-up (see Section 19.3), the memory is not
initialized, and no user code is executed which could write to this memory location.
Therefore the device times out when first connected to the Windows operating
system, and the MSD disk only appears after a time-out and retry, which takes 45 sec
or longer. A work-around for the time-out issue is not available.[/I]