You can use SoftLoad to update an OEM6 family receiver. SoftLoad should be used if automated loading is required or the platform used to communicate with the receiver is not supported by WinLoad.
Attached is SoftLoad_OEM060220RN0000.txt. This file has been altered so that it can be downloaded and used as a batch file to send commands for softloading an OEM6 receiver with 6.220 firmware.
For more information on updating firmware using SoftLoad please see page 80 (Section 4.4.2) of the OEM6 Installation and Operation Manual: http://www.novatel.com/assets/Documents/Manuals/om-20000128.pdf