it did only 30secs because the 060 was initialized as cpu, if all went ok, there is no problem.
I just prefer to flash the upgraded card being disabled by pressing the key 2 when starting the amiga, and then flash with /force parameter, this flashing just takes some minutes(because 020 is running the process) , because in some cards the 060 can't be initialized with 040 firmware, and when the ppc part is overclocked its possible that the card will not be properly recognized and the flashing will stop.