Does ipod touch 4.3 update delete installous?
Technically yes because it will remove your jailbreak if you update and any cydia apps, such as installous will be deleted.
Does ipod touch 4.0 update delete jailbroken apps?
No.Edit: If you mean pirated apps, no, just transfer your purchases to iTunesIf you mean apps downloaded off cydia, yes they will be deleted.
Does installous work on the iPod touch 2g?
How to get installous on iPod touch 2 g?
Problem with Installous app in ipod touch!?
After you download an app, you should click that app in "installous" - "Download", and install that app.