Appearance of Will Post Property Partition

In 2016 my Mother Dies interstate leaving Me, My Father and My Younger Brother as Legal Heirs. My Younger Brother had left my parents 15 years back and I was looking after them and tending to their needs. On sympathy grounds we invited my brother for funeral and etc., After that he started residing in One portion of My Mother's Home in 1st Floor. There were 2 Properties, One Residential and One Factory Office. Residential stands in my mother's name purchased by my father and factory site also purchased by my father and stands in my father's name. Now, in 2017 due to my father's old age he managed to gain trust of my father and planted false complaints against me and my family. Aware of the situation and to avoid mismanagement of family property I filed Partition Suit and took Permanent Injunction against the property. Years passed and I was separated from my Father and My brother and his wife ill-treated my father and during the year 2022, my Father passed away. Upon this my brother took illegal control of the property and has been gaining Rental Profit from the Property since then without my consent or bringing into the courts notice. In order to avoid prolonging we came to a mutual consent that one property to me and one property to my brother. The same is decreed in the court. Now one of my father's friend learnt that he passed away and came to me and gave an Unregistered Will to my hand and said my Father had made a will and written both the properties in my name. Now this is a shock to me and I don't know what to be done. I want to know what legal option do I have to claim back the Property.