And the answer is still the same. You need to get it done from Honda. Even if you buy things from outside you have to take them to a 3S for getting the job done. That is the only way you will be getting the warranty book stamped. At the time of claim they check for every 5000km stamps on your book.
And in sequence to the answer and a must condition of getting it changed from 3S, why would you buy the same genuine honda filters from outside at the same rate as of 3S provided you have to go to the 3S to get it changed in any case for making your warranty valid by getting stamps on your warranty book. Getting your oil changed from any outside source voids warranty. And if you take a non recommended grade engine oil to the 3S and tell them to put it in, in the first place they won't do it. Even if they do they wont give you a stamp on the warranty book periodic check page.
Therefore in a nutshell: no matter where you buy the stuff from, you have to get it changed from Honda. Else warranty is void. And Honda does not serve changing un approved or off specification oils