how to upgrade from Geovision 8.0 to 8.1

[beginner0 0]

problem is that after uprage from 8.0 to 8.2 all video cams bacome blacked. On the version 8.0 all works fine but haotically i get error

Microsoft virusal c++ runtime error

runtime error!

program c:\gv600\gv600.exe

this application has requested the runtime to terminate it in an unusual way.

Please contact the applications support team for more information.

 

my system is xp pro sp2, intel based pc, dvr card vki600L - http://www.loks.lv

 

now my goal is to upgrade my geovision 8.0 to geovision 8.1, i downloaded geovision system 8.1 and drivers.

 

but people ! please tell me, how to correctly upgrade from 8.0 to 8.1, after upgrade i will have video blakced or not ???

 

thanks.