The powerlogger update process is straightforward.
The PLC program (PowerLogger Console) carries the firmware files with it. Its one .exe file, no installation necessary.
Copy the new PLC.exe file to your powerlogger folder and run it.
use the reflash button on the F1 page to update the powerlogger.
Bob
Just tried, here's the message I'm getting...
warning: can not get default com config <com1>
can't open serial port com1
K.