For what it is worth, one helpful person was able to obtain the source code for the 8M version and sent it to me:
kapsi.fi/~jpa/stuff/other/dso_qu … ources.rar
It contains this file which might or might not be the SYS for 8M version, I don’t have such a device myself so cannot try it:
./SYS_V1.60/IAR_V6_Prpject/Exe/SYS_B160.hex