To be honest,firmware upgrade/reflashing on N900 is piss easy compared to what I used to do years ago like flashing patching and etc with Siemens phones(like my fav SX1).
Likewise I don't feel dumb using command-line in case,as I mentioned above, I have step-by-step instructions (basicly copy-paste mode for me^^). I did tweak my Ubuntu using command-line some time ago(though after crash I couldn't force myself "repair" it and now I'm back to W7)

Back to the topic,reflashing didn't help me. Even there are Qt directory that I browsed with GPE Explorer(didn't like MC tbh), I still didn't find where qTranslate(my guinea pig Qt app for now) had been installed...