Siemens SIMATIC S7-CPs Manual page 52

9 Loading New Firmware
If you cannot start the download again following an aborted attempt, you should
turn off the entire rack and turn it on again. You can then restart the firmware
download.
B−52
CP 443-1 for Industrial Ethernet / Manual Part B
C79000-G8976-C223−06
Release 07/2010