Patty, I am just telling you what the immigration officer told me at my last InfoPass appointment. She said that it had to be 90 days after the last update, whatever that update was. I have an LUD of 5/30 for my I-765, which she told me was due to a change of phone number on my application (I do not know why, because I did not change my phone number). She told me that she would not be able to give me an iEAD until 90 days after the last update. I do not think that this is a correct interpretation of the rule for iEAD, but I am just saying that lunajuna could be unlucky and get an immigration officer with a similar mindset.
The immigration officer also told me that my RFE would not delay the EAD, but we seem to have evidence on this board that RFEs do delay EADs. In conclusion, nothing can be taken for granted because immigration officers do not always know what they are talking about.