ISTA Launcher instructions and ista updates

[luci13]

Hello,

Are there any clear instructions on how to install ISTA from scratch using the launcher console?

I didn't find anything clear or useful on how to use it properly.

Also, what's possible if having the 4.39.20 Standalone installed and from there to update? 

Should I update just the SDP to 4.45.21 or also BLP? What's recommended and actually works fine? Without breaking ABL's and other manuals in ISTA


Thank you!