Hello,
I get answer to my original question by an other way.
I write on solution here for ppl who need it.
This solution was provided by ESET France. Thx a lot to them.
How to clear console update cache:
1- Stop ESET Remote Administrator service with services.msc command. 2- Delet all files and subfolders within (file path may change from an install to an other): For Windows 2000/2003: C:/Documents and Settings/All Users/Application Data/ESET/ESET Remote Administrator/Server/updfiles C:/Documents and Settings/All Users/Application Data/ESET/ESET Remote Administrator/Server/mirror For Windows 2008: C:/ProgramData/ESET/ESET Remote Administrator/Server/updfiles C:/ProgramData/ESET/ESET Remote Administrator/Server/mirror 3- Restart ESET Remote Administrator service then run for an update.
Enjoy !