Are you trying to a Samsung A51, or were you looking for a specific firmware version ?
: Stock or custom ROMs used to update or repair a phone's operating system. _p_jb_n_LoLan_Tr_A51.part1.rar
: Right-click the .part1.rar file and select "Extract Here." The software will automatically pull data from the other parts to recreate the original file. Are you trying to a Samsung A51, or