Why are you trying to trick someone into believing that your device is official?
Your question has no ethical reasoning behind it - you are either trying to fool the manufacturer into honoring a void warranty, OR you are trying to trick an unsuspecting buyer. Either way, do not ask users on this forum to assist you in your tomfoolery. You willfully rooted the device.
Matter of fact, here is your quote from June 15:
"Mine says Knox warranty is void
Device is now Custom status"
And here is your quote from June 11:
"What is the warranty on the S5 after 14 days if it is getting hot and shutting off from time to time and speaker is raspy/crackling? And am it gets hot 105°.
Is their a restocking fee on it?
What should I do?"