I made it at last!
I used "Universal Loader SD-HD by Dekolte ALi3511 & ALi3516"
that I found here :
Code:
http://www.world-satellite.net/375387-post2.html
and the AMIKO_HD8150_2.4.19_conax abs file (the latest official fw)
and everything went as it was meant! (it took longer than 20' to load
but finally my box went back to its original status and after that I could successfully load the latest "AMIKO_HD8150_2.4.33_emu" patch without any russian useless for me stuff at all).
A big thanks to all involved!