Hi, I've gotten pretty good at flashing Mikrotik nodes, perhaps 40+ with no failures until this last month. That includes ~12 LHGs of various subtypes. Recently, our local hospital brought me 6 LHG5nDs to flash (RouterOS 6.49.13) and the local club had 3 more (6.48.7). 5 of the hospital's went fine and 2 of the club's went fine. One from each group refused to load the sys-upgrade file. I loaded 20240926-5913b09 on the Club's (one failed) and 3.24.10.0 on the hospital's (one failed). At first I used the "V7" files because they worked...until they didn't. Then I tried perhaps 5 differen