yes, rehoot works in case of your ufs suite works ok and you try to flash and gives error.
in my case problem gets when i copy and paste rh93, rh93 unlock and rh92 flash to new folder called same form, one for rh92 and another one for rh 93 in c:\program files\sarassoft\products. before of that i didn't install any flash for 1112 formally. it happened that i did unlock one whit dct4plus, you know, you most flash two times before unlock and restore it whit it in case for americas, but contrast got down, so i did install the latest one version for 1112 rh 92 formally which i downloaded from universal dongle support. in that moment ufs didn't want flash nay model and any phone. i uninstall suite and drivers, reboot pc, and reinstall everything, i did open new folders rh92/93 and paste all versons flash, now it works........
well, i hope taht it be usefull for all of you...
greetings!!