Interesting to read all this, however, my L32 (335) is unable to find any update, manual or automatic. First time I've seen this problem.
In auto when the notice about checking for updates eventually pops up, a couple of seconds later the notice of no updates follows. If after that I do a manual check the notice of no updates shows almost instantly after the checking pop up. This may be normal, I don't know, because I have always done manual updates.
Regards,
Mike VP8NO