Although I have not yet succeeded in flashing the firmware it does at least give the error messages in an instant. There is a FWUL linux based application that I got from xda forums which I have working which uses a version of odin called JODIN and also another flashing application called Heindall. As many know Odin for windows takes forever to report an error so in frustration I wiped the nand thinking that I could reinstall a nandroid backup off an identical phone I have. I could not get either firmware’s to flash with Odin in windows as I kept getting Pit loading errors etc etc. I have a Samsung S7edge G935F that had boot problems and I have been trying to flash with the standard firmware from Sammobile and also Frija.
SM-G531M (GRANDPRIMEVELTE_EUR_OPEN_HIDDEN50M.pit).SM-G531F (GRANDPRIMEVELTE_EUR_OPEN_HIDDEN100M.pit).SM-G530MU (FORTUNALTE_CHN_CMCC_HIDDEN80M.pit).SM-G530M (FORTUNALTE_SEA_OPEN_HIDDEN60M.pit).SM-G530BT (FORTUNA3G_EUR_OPEN_HIDDEN60M.pit).