Friends, Just to share some feedback from my experience. I got into a reboot loop as well, just yesterday. I was using N9QT, and then also installed MAG's repositories to install MT-Toggles, Music-Toggle, etc. Basically it appears that I committed the same error as the quoted post, above. What I did is (before attempting to try the instructions from thedead1440's post) to flash only the RootFS, i.e. from this link in the Wiki: http://wiki.maemo.org/Flashing_N9#Re...s_user_data.29 (Replace Operating System - preserves user data). Though this didn't preserve any "already-installed" apps, the rest seemed intact. Worked well for me. What were kept intact, upon inspection: 1. Contacts 2. Email Accounts that I enabled (and the emails) 3. Chat Accounts (from the "Accounts" app) that I enabled 4. Music, Videos, Documents, SMS/Conversations What were NOT kept intact, upon inspection: 1. Developer mode got reset to "disabled" or "uninstalled" state (including Terminal and SDK Connectivity Tool) 2. Installed apps (N9QT and any customizations made through N9QT, installed apps from the Nokia/Ovi Store) 3. Extra repositories such as Apps-for-Meego, MAG's repositories 4. Personalized settings, i.e. Brightness, enabled wi-fi connections, brightness, etc. So lesson learned: do not mix up the different approaches to having unrestricted-system-ui (i.e. MAG's version, N9QT version) on your N9. Hope this may help someone in the future.