So the other day, I had completely forgotten to charge my N9 and was late to work so it had shutoff. In my car I plugged in my charger and it started to charge, however my charger was loose so it would charge and uncharge over and over, I didn't notice the charger was loose so I tried to power on the device here and there and it would start for a second and then shutoff. I finally saw it was the charger that was loose and plugged it in and it charged up. When I turned on the phone it started, then gave me an error screen that said Software Error: Too many reboots. Please use NSU to update. Then it shut off. I powered it back on and the phone worked fine.

Now everytime I power off or reboot the phone, I get this error screen, and the phone shuts off, then I turn it back on and all is normal.

Any thoughts on what is going on? Probably will reflash over the weekend.

Probably autobricked the device after failing to boot a certain amount of times (as is the case with the N900).

Can you use Flasher to set and unset RD Mode?

The device isn't bricked at all. It displays that error shuts off and works fine when I power on again. If I power it off, it will do it again.

Maybe it's different this time, it simply triggers a flag in getbootstate (or some other part of the boot process) after X amount of failed boots.

Now I got this problem too, and it's my fault, I was calling killall meegotouchhome too many times playing with home screen wallpapers. (if you kill it five times in a row it reboots) so there is nothing wrong with the device. Is there a way to remove the flag, I don't want to reflash just to make the warning go away

This polly is a feature to spot the 'reboot loop' if it happens. Good question though: how to get rid of this?

Just 'try' with set R&D mode, boot up, shut down, unset R&D mode, boot up normally (as Hurrian already said). Like (for N900) in
https://bugs.maemo.org/show_bug.cgi?id=6350.
Especially
https://bugs.maemo.org/show_bug.cgi?id=6350#c34
https://bugs.maemo.org/show_bug.cgi?id=6350#c40
https://bugs.maemo.org/show_bug.cgi?id=6350#c42

Furthermore there should be another (official) solution to get rid of it.
But at least now the N9 does boot.

Nah, nothing with rd mode. It says xsession/mthome by the way. Does this mean something to you?