I made a fool out of myself today and ruined my N9. I hade very little battery juice left when I decided to install the Billboard app. During the installation the battery got totally empty and the phone died.

It was then impossible to even start the phone. I managed to charge it by using the Flasher and then stopped the process at 10% of charge to continue charging with the wall charger.

I have my phone set up with dualboot: Nitdroid and MeeGo 1.2
After my incident I can only boot into Nitdroid. Battery is at 50% now so it's not caused by low battery anymore. Something probably got messed up when installing the app and crashing in the midst of the process.
Can I do something to be able to boot into MeeGo or am I doomed to flash my phone?

If I decide to reflash and go all MeeGo 1.3, is it possible to flash from 1.2 to 1.3 in my situation with a dual boot setup? Will the dual boot and Nitdroid disappear in the progress or do I have to do something special.

Edit: Moderators; feel free to move this post into another thread if it's misplaced.