How does gulliver help the lilliputians?how doe he fall from their favour later?

Gulliver is finally granted his freedom on the condition that he (1) swear to help the Lilliputians if they are ever in a war, (2) survey the surrounding land, (3) help with any building that needs to be done, and (4) deliver messages. He agrees. In return he will be granted the food and drink sufficient for 1,724 Lilliputians. Redresal and the Lilliputians also have to worry about the threat of invasion from those living on the Island of Blefuscu. Gulliver promises to help them from the invaders and basically decimates them. Gulliver is awoken at midnight by hundreds of Lilliputians telling him that there is a fire in the empress's chamber in the palace. Gulliver hurries to be of assistance, but he quickly realizes that the thimble-sized buckets he is being passed are not having an affect on the raging fire. Thinking quickly, Gulliver chooses to urinate on the fire, putting it out completely and keeping it from spreading to the rest of the palace.

Gulliver returns to his home, where he awaits word of how the emperor and empress will react to his deed. He shortly learns that the empress feels abhorred. Finally Gulliver is charged with treason (He's accused of carrying on with Flimnap's wife).