latest SamsungOS version for this device was “G9600ZHU9FVF2” (android 10 based)
(you can find that information on your device in → settings → about the phone → android version 10 → version number or baseband version )
multi operator capable (TIM, Claro, Vivo, Oi, Sercomtel, CTBC, Nextel) / unbranded / free from carrier CSC for Brazil is “ZTO”
Be aware that voLTE will not work on a Samsung device running alternative OS, you need 2g/3g network from your carrier (no more the case in many country) to make “normal” calls
sorry for you…
so you will need to follow the “Odin3 for windows” way to flash the custom “recovery-e” manager on the device (extract the “recovery.img” from the main /e/ .ZIP and convert the .IMG into .TAR using “7zip”)