YouTu_01
Android Enthusiast
XP / the KDZ updater all recognise the phone within VirtualBox and I *think* I can run shell instructions to the phone using adb (haven't tested yet) but the KDZ updater fails with TYPE_WPARAM_UPGRADE_ERROR Error Code = 502 (details / log messages are in my originial post).
I will test it in my Vbox XP install too, see if i can reproduce the error you get, and/or , if i can find a workaround to it, as i'm interested in flashing the phone from within Ubuntu.