If you update TOTUM from version 1 to 2 visit https://docs.totum.online/update_one_two
If you update TOTUM from version 2 to 3 visit https://docs.totum.online/update_two_three
If you update TOTUM from version 3 to 4 visit https://docs.totum.online/update_three_four
If you update TOTUM from version 4 to 5 visit https://docs.totum.online/update_four_five