Rohr, 66, has extended his stay in Nigeria till 2022 after he agreed to a pay cut in the local currency and reside in the country.
Officials said the German-born coach will earn $49 000 a month instead of the $55 000 stipulated in his previous contract and he will live in Nigeria for at least 10 months a year.
"This is a special job because this is my team, I built it with my staff," the former Niger and Gabon coach said Monday on local television.
"It's a very young team, but the mission is not finished yet, so we want to continue. We all have to make sacrifices and I will be the first."
Rohr said the target is to be champions of Africa again. The Super Eagles have won the Africa Cup of Nations three times - in 1980, 1994 and 2013.