Mikrotik basebox 2

hi, i just ordered a mikrotik basebox 2, this outdoor version RB912UAG-2HPnD-out have only 64 MB of nand memory, but the RB912UAG-2HPnD have 128 MB of nand memory. so is the nand-64m-squashfs-sysupgrade.bin the right one for this device or i should use the nand large?

Nand large, only that one worked for me