Hi
have you follwed simply steps mean - right click driver and then click roolback ,if so please let us know the error code.
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If at first you don't succeed, skydiving is not for you
some examples:
install: esxupdate --bundle=ntx-nx_nic-4.0.585-164009-offline_bundle-370920.zip update
check bulletin ID: esxupdate --bundle=ntx-nx_nic-4.0.598-164009-offline_bundle-450804.zip info
remove bulletin: esxupdate -b ntx-nx_nic-4.0.598-164009 remove
I hope I could help ...
Regards,
Cop