Sure, but the whole point of factory reset is when the paired phone app no longer talks to the bulb. ( You might have lost the phone or the account details). It

Sure, but the whole point of factory reset is when the paired phone app no longer talks to the bulb. ( You might have lost the phone or the account details). It just allows you to start with the assumption you are physically in control of the bulb and hence are authorised to reset it.